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Author Title Year Publication Volume Pages
Brown, J.L.; Wasser, S.K.; Wildt, D.E.; Graham, L.H. Steroid Metabolism and the Effectiveness of Fecal Assays for Assessing Reproductive Status in Felids 1994 Biology of Reproduction 50 185
Freeman, H. The view from here: permit hunting of snow leopards 1990 Snow Line 2-3
Yanke, R. Think snow 1976 The Zoo Review 12-13
Woodland Park Zoo No vacancy 1980
Encke, B. The breeding of snow leopards (Uncia uncia) in the Krefeld Zoo 1966 Freunde des Kolner Zoo 9 145-146
Encke, B. Die sucht von schneeleoparden (Uncia uncia) im Krefelder Tierpark 1967 Freunde des Kolner Zoo 9 145-146