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Ödberg Fo,. (1973). An interpretation of pawing by the horse, displacement activity and original functions. Säugetierk Mitt, 21, 1–12.
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Ödberg Fo,. (1973). L'éthologie: Son passé et son development actuel. Zoo, 38, 208–213.
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Rashek Va,. (1973). Reproduction of the wild ass and its behavior during rutting time on the Barsa – Kelmes Island. Bjul Mosk Obsc Ispy Priroda Ot Biol, 78.
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Solomatin Ao,. (1973). Kulan. Moskau.
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Welsh Da,. (1973). The life of Sable Island's wild horses. Nature Canada, 2, 7–14.
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Rudran, R. (1973). Adult male replacement in one-male troops of purple-faced langurs (Presbytis senex senex) and its effect on population structure. Folia Primatol (Basel), 19(2), 166–192.
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Knoll, H., & Horschak, R. (1973). [Ecology of fermentation sarcinas Sarcina ventriculi and Sarcina maxima]. Z Allg Mikrobiol, 13(5), 449–451.
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Rumiantsev, S. N. (1973). [Biological function of Clostridium tetani toxin (ecological and evolutionary aspects)]. Zh Evol Biokhim Fiziol, 9(5), 474–480.
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Pitchford, R. J., Visser, P. S., du Toit, J. F., de Pienaar, U. V., & Young, E. (1973). Observations on the ecology of Schistosoma mattheei Veglia & Le Roux, 1929, in portion of the Kruger National Park and surrounding area using a new quantitative technique for egg output. J S Afr Vet Assoc, 44(4), 405–420.
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Buttiker, W. (1973). [Preliminary report on eye-frequenting butterflies in the Ivory Coast]. Rev Suisse Zool, 80(1), 1–43.
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