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Behavior of Mountain Goats, Elk and Other Wildlife in Relation to U.S. Highway 2, Glacier National Park
Francis J. SingerUnited States. National Park Service
出版U.S. Department of the Interior, National Park Service, 1975
URLhttp://books.google.com.hk/books?id=kuG8hag3zrgC&hl=&source=gbs_api
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