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Agriculture Handbook

Ronald I. Perla

出版	U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, Alpine Snow and Avalanche Research Project, 1978
URL	http://books.google.com.hk/books?id=7ot2jcTFGo0C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

Set includes revised editions of some issues.