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Effects of People on Bighorn Sheep in the San Gabriel Mountains, California

Kathleen M. Hamilton

出版	Cooperative National Park Resources Studies Unit, University of Nevada, Las Vegas, Department of Biological Sciences, 1982
URL	http://books.google.com.hk/books?id=f0Wd4RiN2vAC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN