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Ying-xiang, W. (2003). A complete checklist of mammal species and subspecies in China, a taxonomic and geographic reference. Beijing: China Forestry Publishing House.
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Yongheng, Z. (1990). Birds and mammals of forest in Xinjiang. (pp. 401–446). Urumqi and Beijing: Xinjiang People's Publishing House, Urumqi; China Forestry Publishing House, Beijing.
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Yongsheng, L. (1994). International hunting and the involvement of local people in Dulan, Qinghai, China. In J.L.Fox, & D.Jizeng (Eds.), (pp. 305–314). Usa: Islt.
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Yongzu, Z. (1997). Distribution of mammalian species in China. Beijing: China Forestry Publishing House.
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Yuan, G. (1991). Vertebrates fauna Xinjiang. Urumqi: Xinjiang People's Press.
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Yuan, G. Y. (1998). Natural environmental protection and nature reserves in Xinjiang. Xinjiang, Urumqi: Science, Technology and Hygiene Publishing House of Xinjiang, Urumqi.
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Yudin Yu. (1983). A review of history of creation of the Red Book.
Abstract: A review of history of creation of the Red Book, International Red List, and Red Data Book of the USSR, Red Data Books of Soviet Republics is made. Snow leopard (with a total population of 10 animals) is included in the Red Data Book of the Uzbek SSR as an endangered species. The author gives the examples of careless attitude to plants and animas resulting in decrease of their populations or even extermination.
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Zahler, P., & Graham, P. (2001). War and wildlife: the Afghanistan conflict and its effects on the environment. Seattle: International Snow Leopard Trust.
Abstract: The International Snow Leopard Trust (ISLT) is a nonprofit environmental organization dedicated to the conservation of the endangered snow leopard and its mountain ecosystem through a balanced approach that considers the needs of the local people and the environment. As such, we wish to stress that the ISLT does not have a position regarding the present conflict in Afghanistan. However, this organization believes that there are important repercussions regarding this conflict that have yet to be addressed in the media, within government circles, or among the public. This report documents some of these repercussions so that they may be included in the present dialog.
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Zakhidov T.Z. (1960). Irbis (Felis uncia) Ilvrs.
Abstract: The author provides information about snow leopard taxonomy, distribution, habitat and appearance. Biology of this animal is understudied. Snow leopard is able to make long jumps. It feeds upon ibex, wild sheep, marmots, partridge, and sometimes livestock, but never man. Gestation period is three months, at the end of May female gives birth to two or three cubs. Being very occasional, purchase of skin is of no practical value.
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Zakirov A. (1974). Cats.
Abstract: It describes a fauna complex of the Fergana valley in Uzbekistan. Three cat family species are found there (wild cat, Turkistan lynx and snow leopard). Snow leopard (Uncia uncia) inhabits eastern part of the Chatkal ridge in the mountains of Akchala. Known are cases of snow leopard's preying on sheep in summer but such cases are extremely rare and the harm is negligent. This is a highly endangered species and therefore full prohibition of shooting the animals is required.
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