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Vesey,. (1960). Grazing among east african game animals. J Mammal, 41, 161–172. |
Walton A,. (1960). Copulation and natural insemination.. |
Zeeb K,. (1960). Ethologische und morphologische Betrachtungen am Pferd und deren Bedeutung für praktische Belange. Opel – Jahrb, 59/60. |
Schelling, T. (1960). The Strategy of Conflict. |
Pimlott, D. H. (1960). The use of tape-recorded wolf howls to locate timber wolves. Toronto: Twenty-second Midwest Wildlife Congress. |