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  Author Title Year Publication Serial Volume Pages Links
Harlow, H.F. Learning and satiation of response in intrinsically motivated complex puzzle performance by monkeys 1950 Journal of Comparative and Physiological Psychology 6550 43 289-294 details   url
Willemse Mca, The shifting of the molar row with regard to the orbit in equus and giraffa 1950 1708 30 311-326 details   openurl
Imanishi K, Social life of semi 1950 1212 4 29-42 details   openurl
Bourdelle Me, F.S. La classification des equides actuels 1950 965 14 126-139 details   openurl
Antonius. O., Fruchtbare Maultiernachzucht 1950 Zool Anzeiger Erg 893 28-33 details   openurl
Antonius. O., Beobachtungen an Einhufern in Schönbrunn. XIX. Ein Waldzebra 1950 Zoologische Garten 892 17 204-210 details   openurl
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