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Rate and Spacing in Seeding Crested Wheatgrass in New Mexico

H. W. Springfield

出版	Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1965
URL	http://books.google.com.hk/books?id=QD0vQCrSrX8C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN