Insecticide Tests for Control of Needle Midges,¹ Contarinia spp., on Douglas-Fir in Western Oregon²

Author： NAGEL W. P. EVERY R. W. CAPIZZI J

Publisher： Entomological Society of America

ISSN： 1938-291X

Source： Journal of Economic Entomology, Vol.62, Iss.5, 1969-10, pp. : 1098-1100

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