Insecticidal Control of Adelges cooleyi1 on Douglas-Fir in Ohio, with Notes on Biology2

Author： CAMPBELL R. L.   BALDERSTON C. P.  

Publisher： Entomological Society of America

ISSN： 1938-291X

Source： Journal of Economic Entomology, Vol.65, Iss.3, 1972-06, pp. : 912-914

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