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National Zoological Park. (1974). Significant birth and hatchings at the National Zoological Park: Studbook for snow leopards (Uncia uncia). |
Freeman, H., Braden, K. (1977). Zoo location as a factopr in the reproductive behavior of captive snow leopards, Uncia uncia. Zoological Garten J.F., 47(3/4), 280–288. |
Chubykina, H. L., Shilo, R.A. (1981). A study of diurnal activity rhythms in snow leopards and lynx (Panthera uncia and Felix lynx) at Novosibirsk Zoo. International Zoo Yearbook, 21, 193–196. |
von Dungern, D. F. (1910). Lulu, my snowleopard. |
Jones, M. L. (1977). The snow leopard in captivity (R. L. Eaton, Ed.) (Vol. III). |
Phillips, L. (1980). Post-mortem records, Henry Doorly Zoo, Omaha, Nebraska. |
Clevenger, S. A. (1980). Snow leopards born... and born... and born at OKC Zoo. |
Camp, V. (1976). The winter pussycat (Vol. XII). |
Phillips, L. G. (1981). Palpebral coloboma in three snow leopards. |
Anonymous. (1975, 11 September). A rare snow leopard surgery. Seattle Post Intelligencer. |