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Calcium Arsenate Dusting as a Cause of Aphid Infestation

Justus Watson FolsomFloyd Frank Bondy

出版	U.S. Department of Agriculture, 1930
URL	http://books.google.com.hk/books?id=crwFj39fVYsC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN