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Aerial Application of Bacillus Thuringiensis - Fenitrothion Combinations Against the Spruce Budworm, Choristoneura Fumiferana (clem.) by O. N. Morris and J. A. Armstrong

J. A. (John Alexander) ArmstrongOswald N. MorrisChemical Control Research Institute (Canada)

出版	Canadian Forestry Service, 1973
URL	http://books.google.com.hk/books?id=8RR1NAEACAAJ&hl=&source=gbs_api