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Guidelines for the use of GYPCHEK to control the gypsy moth

Franklin B. LewisMichael L. McManusNoel F. Schneeberger

出版	Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1979
URL	http://books.google.com.hk/books?id=F7eof3ukx-UC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN