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Ponderosa Pine Management Conference, Fort Valley Experimental Forest, September 19-22, 1944

出版	Southwestern Forest and Range Experiment Station, Forest Service, U. S. Department of Agriculture, 1944
URL	http://books.google.com.hk/books?id=7qVXBNVNIAYC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN