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Protecting Orchard Crops from Diseases and Insects in the Hudson Valley. [By] C.R. Crosby, W.D. Mills, and J.A. Evans. (Revised January 1937.).

Cyrus Richard CROSBY

出版	Ithaca, 1937
URL	http://books.google.com.hk/books?id=Da0SMwEACAAJ&hl=&source=gbs_api