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How to Identify and Control Pine Needle Rust Disease

Thomas H. NichollsRobert L. Anderson

出版	U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station, 1976
URL	http://books.google.com.hk/books?id=yCurX2Z8P_oC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN