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Author (up) Title Year Publication Serial Volume Pages
Wotschikowsky, U. Wölfe und Jäger in der Oberlausitz 2007 Broschüre, Freundeskreis freilebender Wölfe 6691
Yarnell, K.; Hall, C.; Billett, E. An assessment of the aversive nature of an animal management procedure (clipping) using behavioral and physiological measures 2013 Physiology & Behavior 6611 118 32-39
Young, R.J. Environmental Enrichment for Captive Animals 2003 Wiley Interdiscip Rev Cogn Sci 6596
Zajonc, R.B. Social Facilitation 1965 Science 6565 149 269-274