Response of Douglas-Fir Cone and Seed Insects to Implants of Systemic Insecticides in a Northern California Forest and a Southern Oregon Seed Orchard

Author： STEIN JOHN D.   SANDQUlST ROGER E.   KOERBER THOMAS W.   FRANK CHARLES L.  

Publisher： Entomological Society of America

ISSN： 1938-291X

Source： Journal of Economic Entomology, Vol.86, Iss.2, 1993-04, pp. : 465-469

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