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Schneider, V. K. M. (1936). Einige bilder zur Aufzucht eines schneeleoparden. Dresden Zoological Garden, , 37–39.
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von Dungern, D. F. (1910). Lulu, my snowleopard.
Abstract: Recollections by a German forest-ranger about his pet, a snowleopard.
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Hemmer, H. Studies of Irbis, Uncia uncia: Munich State-collection Zoo.
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Clapp, M. Rare cat has back problems. San Antonio News.
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Lindee, S. Snow leopard's back repaired.
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Seneca Park Zoo. Meat loan saves leopard.
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Woodland Park Zoo. Snow leopard exhibit plan.
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