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Biology of the Sweetclover Aphid, Therioaphis Riehmi (Börner), with Emphasis on Resistance in Sweetclover to this Insect

George Rudolph Manglitz

出版	University of Nebraska--Lincoln, 1962
URL	http://books.google.com.hk/books?id=zcLQtgAACAAJ&hl=&source=gbs_api