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Stimulation of Flower and Seed Production in a Young Slash Pine Orchard

Robert Paul Schultz

出版	U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1971
URL	http://books.google.com.hk/books?id=HSYVx19xm7MC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN