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\bibitem{Marma+Yunchis1968} Marma, B. B., \& Yunchis, V. V. (1968). Observations on the breeding, management and physiology of Snow leopards (Panthera u. uncia) at Kaunas Zoo from 1962 to 1967. In C. Jarvis, \& R. Biegler (Eds.), \textit{Canids and Felids in Captivity} (pp. 66--73). Zoological Society of London.

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