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Handling and Commercial Utilization of the Kieffer Pear

Charles W. CulpepperJacob Martin LutzHubert Hill Moon

出版	U.S. Department of Agriculture, 1954
URL	http://books.google.com.hk/books?id=mvAJtr9qKH4C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN