Comparison of Two Isolates of Bacillus thuringiensis in a Field Test on Western Spruce Bud worm (Lepidoptera: Tortricidae)

Author： STELZER MILTON J.   BECKWITH ROY C.  

Publisher： Entomological Society of America

ISSN： 1938-291X

Source： Journal of Economic Entomology, Vol.81, Iss.3, 1988-06, pp. : 880-886

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