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Author |
VanDierendonck, M.C. |
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Title |
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Year |
2006 |
Publication |
The Importance of Social Relationships in Horses |
Abbreviated Journal |
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Chapter 8 |
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horses, social relationships, dominance, allogrooming, play, kinship, familiarity, self-rewarding, interventions, ethological need |
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Abstract |
Feral horses are social animals, which have to rely on survival strategies centered on the formation of cohesive social bonds within their bands. Many problems in the husbandry of social animals such as horses, are due to the fact that the limits of their adaptive abilities are exceeded. Evidence suggests that the fundamental social characteristics of domestic horses have remained relatively unchanged. The social structure, social strategies and social interactions were investigated (3 non-consecutive years, 24 hr per day for several weeks) in long term established groups of domestic horses (mares and geldings of all ages) and a few small introduced groups, kept in (semi)natural environments. The general aim was to investigate the social needs of domestic horses. The social life of domestic horses was characterised by long lasting bonds with preferred partners which were established and maintained by allogrooming, play, proximity and dominance behaviours. Bonding partners were mainly found within the same sex-age group, but adult geldings also bonded with sub-adult mares and geldings. Adult mares were clustered in a group, while the other animals formed a second group. Among the adult mares, subgroups according to reproductive state were formed. Individuals regulated their social network by interfering with interactions between other members of the herd, which in itself is complex. An intervention is a behavioural action of one animal that actively interferes with an ongoing interaction between a dyad with the apparent aim of altering that interaction. This was verified by post-hoc analyses of disturbed and undisturbed interactions. Interventions in allogrooming or play were performed significantly more often when at least one member of the initial dyad was a preferred partner of, or familiar to (within the small introduced bands) the intervener. The stronger the preferred association in allogrooming between the intervener and member(s) of the initial dyad, the higher the probability the intervener would displace one initial member and continue allogrooming with the other. Just five behaviours were extracted which reliably reflected the dominance relations among horses. Aggression with the hind quarters was used both offensively and defensively and therefore not suitable as a reliable parameter. Individual dominance relationships were related to social experience. The implications of these findings for horse husbandry were assessed. It is argued that the execution of affiliative behaviours may be rewarding in itself, and therefore always will be a highly motivated behaviour. It is shown that social positive physical interactions (allogrooming, play) with other horses is an ethological need and therefore indispensable in modern husbandry systems. Ethological needs are so important for the animal that husbandry systems that lack the possibilities to execute such behaviours will cause chronic stress. It is concluded that all horses need physical social contact, and that horses, which lack appropriate social learning experiences during ontogeny, may be hampered in their social functioning later in life. Solutions for problems, including dominance problems, in individual social housing and group housing are presented. |
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Ph.D. thesis |
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Universiteit Utrecht |
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Equine Behaviour @ team @ |
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2373 |
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Author |
VanDierendonck, M.C. |
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Title |
General Introduction |
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Year |
2006 |
Publication |
The Importance of Social Relationships in Horses - |
Abbreviated Journal |
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Chapter 1 |
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Keywords |
horses, social relationships, dominance, allogrooming, play, kinship, familiarity, self-rewarding, interventions, ethological need |
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Abstract |
Feral horses are social animals, which have to rely on survival strategies centered on the formation of cohesive social bonds within their bands. Many problems in the husbandry of social animals such as horses, are due to the fact that the limits of their adaptive abilities are exceeded. Evidence suggests that the fundamental social characteristics of domestic horses have remained relatively unchanged. The social structure, social strategies and social interactions were investigated (3 non-consecutive years, 24 hr per day for several weeks) in long term established groups of domestic horses (mares and geldings of all ages) and a few small introduced groups, kept in (semi)natural environments. The general aim was to investigate the social needs of domestic horses. The social life of domestic horses was characterised by long lasting bonds with preferred partners which were established and maintained by allogrooming, play, proximity and dominance behaviours. Bonding partners were mainly found within the same sex-age group, but adult geldings also bonded with sub-adult mares and geldings. Adult mares were clustered in a group, while the other animals formed a second group. Among the adult mares, subgroups according to reproductive state were formed. Individuals regulated their social network by interfering with interactions between other members of the herd, which in itself is complex. An intervention is a behavioural action of one animal that actively interferes with an ongoing interaction between a dyad with the apparent aim of altering that interaction. This was verified by post-hoc analyses of disturbed and undisturbed interactions. Interventions in allogrooming or play were performed significantly more often when at least one member of the initial dyad was a preferred partner of, or familiar to (within the small introduced bands) the intervener. The stronger the preferred association in allogrooming between the intervener and member(s) of the initial dyad, the higher the probability the intervener would displace one initial member and continue allogrooming with the other. Just five behaviours were extracted which reliably reflected the dominance relations among horses. Aggression with the hind quarters was used both offensively and defensively and therefore not suitable as a reliable parameter. Individual dominance relationships were related to social experience. The implications of these findings for horse husbandry were assessed. It is argued that the execution of affiliative behaviours may be rewarding in itself, and therefore always will be a highly motivated behaviour. It is shown that social positive physical interactions (allogrooming, play) with other horses is an ethological need and therefore indispensable in modern husbandry systems. Ethological needs are so important for the animal that husbandry systems that lack the possibilities to execute such behaviours will cause chronic stress. It is concluded that all horses need physical social contact, and that horses, which lack appropriate social learning experiences during ontogeny, may be hampered in their social functioning later in life. Solutions for problems, including dominance problems, in individual social housing and group housing are presented. |
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Ph.D. thesis |
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Equine Behaviour @ team @ |
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2366 |
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Author |
Hois, C. |
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Title |
Feldstudie zur Gewichtsentwicklung und Gewichtsschätzung beim wachsenden Pferd |
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2004 |
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Ph.D. thesis |
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Tierärztlichen Fakultät der Ludwig-Maximilians-Universität München |
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Equine Behaviour @ team @ |
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5204 |
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Author |
Carter, C.; Greening, L. |
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Title |
Auditory stimulation of the stabled equine; the effect of different music genres on behaviour |
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equine, behaviour, music, environmental enrichment, auditory |
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Having a radio playing during the daytime at some equine establishments is common practice, but few studies have investigated whether particular music genres could be enriching for stabled horses or whether they may be perceived as aversive. This study aimed to establish whether behavioural responses differed when exposed to musical genres (Classical, Country, Jazz and Rock) and when compared to a control (no music). Eight Thoroughbred geldings (age range 8-10 years, average 8.9 years) were exposed to four musical environments and the control environment (no music) and observed in their usual stable, using instantaneous focal sampling every thirty seconds according to a pre-determined ethogram. Each horse was exposed to each genre for an hour in total, at a time when there was no human traffic or interference on the yard. All horses had been stabled for three hours before the study began. The association between genres and behavioural frequencies recorded for each environment was tested using Fisher’s Exact test of association (P<0.01), IBM SPSS21. No statistically significant associations (P=1.0) were recorded between alert or relax behaviours in Country, Classical, and Control environments. Significant associations (P<0.001) between frequency of alert behaviours and Jazz and Rock environments were noted. The latter genres appeared the most aversive which may be due to fast tempo and minor key, especially in the Jazz piece used. Country and Classical genres were slow tempo with a major key and appeared to result in more restful behaviours than Jazz or Rock. Further research is needed to; assess whether music could be used as an enriching tool, and investigate equine emotional capabilities to understand the emotional effects of music. Future studies could also consider how music impacts upon the behaviour of the human handler and whether this influences equine behaviour. |
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aCentre for Performance in Equestrian Sports, UWE Hartpury, Hartpury College, Gloucester, GL19 |
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5745 |
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Author |
Feh, C. |
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Title |
Etude du développement des relations sociales chez des étalons (Equus caballus) de race camargue et de leur contribution à l'organisation sociale du groupe |
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1987 |
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Diplôme de recherche universitaire: neurosciences comportementales: Université d'Aix-Marseille II. Faculté des sciences de Luminy Marseille (FRA)* 117p |
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Master's thesis |
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Université d'Aix-Marseille |
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Marseille |
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Equine Behaviour @ team @ |
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5485 |
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Author |
Rehage; C. |
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Title |
Klinische Symptomatik und Einfluss eines Nasennetzes auf die Leistung von Turnierpferden mit Headshaking |
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Year |
2007 |
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Dissertation |
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Tierärztlichen Hochschule Hannover |
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Hannover |
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Equine Behaviour @ team @ |
Serial |
5631 |
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Author |
Schnerr, C. U. |
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Title |
Feldstudie zur Epidemiologie und Bekämpfung von Strongyliden in Pferdebeständen im Raum Baden- Württemberg |
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2011 |
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In der Zeit von April 2005 bis März 2006 wurden bei 105 Pferden monatlich
koprologische Untersuchungen durchgeführt. Die Pferde waren zu zwei Drittel
Jungtiere (≤ 4 Jahre) und ein Drittel > 4 Jahre. Die zur Verfügung stehenden vier
Betriebe befanden sich alle im Raum Baden-Württemberg.
Die Kotproben wurden mit Hilfe der Flotation auf Magen-Darmnematoden untersucht
und anschließend einer quantitativen Eizahlbestimmung nach Mc Master unterzogen.
Ab einem Eigehalt von 250 Eiern pro Gramm Kot (EpG) wurden die Pferde
entsprechend der Gruppenzugehörigkeit entweder mit Pyrantel oder Ivermectin
behandelt.
Es wurden bei 73 Pferden ausschließlich Strongylideneier nachgewiesen; bei vier
Pferden waren in der Flotation zusätzlich Eier von Parascaris equorum zu finden.
Bei 28 (26,7%) der untersuchten Pferde wurden in keiner der 12 untersuchten
Proben Eier von Magen-Darmnematoden nachgewiesen. Insgesamt mussten
57 (54,3%) der Pferde über den gesamten Untersuchungszeitraum hinweg nicht
behandelt werden. 48 (45,7%) Pferde mussten mindestens einmal anthelminthisch
behandelt werden. Kein Pferd musste häufiger als dreimal behandelt werden.
In den Monaten August bis November war der Anteil an positiven Proben der
Jungtiere signifikant höher als bei den Pferden > 4 Jahre. Innerhalb der
Jungtiergruppe nahm die Höhe der Strongyliden-Eiausscheidung mit zunehmendem
Alter signifikant ab.
Ebenso nahm die Anzahl der positiven Proben im Laufe des
Untersuchungszeitraums signifikant ab.
Die beiden zur Entwurmung eingesetzten Substanzen (Pyrantel und Ivermectin)
waren voll wirksam. In 98,8% der untersuchten Proben war ein Rückgang der
Ei-Ausscheidung noch vier Wochen nach der Behandlung auf 0 EpG nachweisbar,
d. h. es gab keinerlei Anzeichen für das Vorliegen von Resistenzen gegen die
eingesetzten Substanzen.
Die vorliegenden Untersuchungen sind ein weiterer Beweis dafür, dass mit Hilfe der
selektiven anthelminthischen Behandlung die Anzahl der Entwurmungen –
insbesondere auch bei Jungtieren – deutlich gesenkt werden kann.
Die Eiausscheidung und damit die Weidekontamination werden mit Hilfe dieses
Verfahrens deutlich reduziert.
[Between April 2005 and March 2006 monthly koprological examinations where
carried out on 105 horses.
Two third of the horses were young animals (≤ 4 years) and a third were > 4 years
old.
The four farms on hand were all located in the Baden- Württemberg area.
Faecal samples were examined for gastro-intestinal nematodes by means of flotation
and subsequently subjected to an egg-quantity counting according to Mc Master.
Starting from an egg content of 250 eggs per gram faeces (EpG), the horses were
treated with either Pyrantel or Ivermectin according to their group affiliation.
In 73 horses solely Strongyle eggs were detected; the flotation of four horses
additionaly showed eggs of Parascaris equorum.
In 28 (26,7%) of the examined horses none of the 12 examined samples showed
eggs of gastro-intestinal nematodes.
Overall 57 (54,3%) horses didn´t need any treatment during the total examination
cycle. 48 (45,7%) of the horses needed at least one anthelminthic treatment.
None of the horses needed to be treated more than three times.
From August to November the rate of positive samples within the group of young
animals was significantly higher than in the horses > 4 years.
Whithin the group of young animals the level of Strongyle egg excretions dropped
significantly with advancing age.
Likewise, the number of positive samples also dropped significantly in the course of
the examination cycle.
Both substances (Pyrantel and Ivermectin) applied for deworming were fully effective.
Even a further 4 weeks after treatment the examined sample showed a drop of egg
excretion to 0 EpG in 98,8% of the samples, in other words there were no signs of
prevailing resistance appearances towards the applied substance.
The present studies are further proof that the number of dewormings-especially in
young animals can be distinctly reduced by means of selective anthelminthic
treatments.
Egg excretion and therewith pasture land contamination can be clearly reduced by
means of this procedure.] |
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Ph.D. thesis |
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Equine Behaviour @ team @ |
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5722 |
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Author |
Fabritius, C. |
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Title |
Sozialstruktur einer Herde Islandpferde bei Veränderung der Gruppenzusammenstellung |
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2009 |
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Die Domestikation des Pferdes begann wahrscheinlich etwa 5500 v. Chr. in
Südosteuropa. In Mitteleuropa traten circa 3000 v. Chr. die ersten Hauspferde auf.
Grundsätzlich wird davon ausgegangen, dass sich die Ansprüche des Pferdes
hinsichtlich der Lebensbedingungen, welche sich im Laufe der Evolution über
Millionen von Jahren entwickelt haben, in der Obhut des Menschen nicht wesentlich
geändert haben. Für Pferde typisch ist das Leben im Sozialverband, der Herde
(Zeitler-Feicht 2008). Diese wird auch in den Leitlinien der Sachverständigengruppe
tierschutzgerechte Pferdehaltung (10. November 1995) empfohlen, sofern es nicht
durch zu häufigen Wechsel im Bestand zu einem Übermaß an Stress und
agonistischen Aktionen kommt.
Ziel der Arbeit war es, anhand eines nach der Literatur erstellten Ethogramms des
Sozialverhaltens des Pferdes, herauszufinden, inwieweit Änderungen der
Gruppenstruktur die sozialen Beziehungen beeinflussten. Die Fragestellung bezog
sich auf eine Herde in Offenstallhaltung. Um die eventuellen Veränderungen der
sozialen Interaktionen zu untersuchen, wurde erst die vorhandene Gruppenstruktur
der Herde festgestellt. Danach wurde ein Individuum aus der Herde entfernt und ein
anderes dazugestellt. Anschließend wurde die Gesamtgruppe in zwei Untergruppen
geteilt und nach einem gewissen Zeitraum erneut zusammengeführt. Dabei wurden
jeweils die Interaktionen der Pferde anhand des Ethogramms beobachtet,
aufgezeichnet und protokolliert.
Untersuchungsgegenstand war eine Herde Islandpferde, die in einer
Ausgangsgruppe von 16 Tieren gehalten wurde.
Die Beschreibung einer sozialen Ordnung im Allgemeinen und einer Rangordnung im
Besonderen wird in vielen Studien ausschließlich auf der Basis der Beobachtung und
Bewertung offensiv aggressiver Verhaltenselemente durchgeführt. Aggressives
Verhalten muss hingegen im Gegensatz zu Verhaltensweisen, die die Anerkennung
des sozialen Status des anderen Pferdes bedeuten, wie Abwenden oder Meiden,
nicht notwendigerweise ein Anzeichen von Dominanz über ein anderes Tier
bedeuten (Van Hoof u. Wensing 1987, Schilder 1988). Ein weiterer Aspekt dieser
Arbeit sollte sein, eine Möglichkeit zu finden, die Sozialstruktur auch auf der
Grundlage defensiver und soziopositiver Verhaltenselemente zu definieren. |
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Ph.D. thesis |
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Hannover |
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Equine Behaviour @ team @ |
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5727 |
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Author |
Grönemann, C. |
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Title |
Konfliktfeld Pferd und Wolf – Eine Untersuchung zu Einstellungen, Erwartungen und Befürchtungen von Pferdehaltern und Reitsportlern in Niedersachsen |
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Manuscript |
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2015 |
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master thesis |
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Master's thesis |
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Universität Hildesheim |
Place of Publication |
Hildesheim |
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Equine Behaviour @ team @ |
Serial |
6683 |
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Author |
Whiten, A.; McGrew, W.C. |
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Title |
Is this the first portrayal of tool use by a chimp? |
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Year |
2001 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
409 |
Issue |
6816 |
Pages |
12 |
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Keywords |
Animals; *Behavior, Animal; Pan troglodytes/*physiology; Philately |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0028-0836 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
PMID:11343083 |
Approved |
no |
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Call Number |
refbase @ user @ |
Serial |
739 |
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