Increase in the Population of Lecanium pruinosum on English Walnuts Following Applications of DDT Sprays

Author： MICHELBACHER A. E.   SWANSON CLARK   MIDDLEKAUFF W. W.  

Publisher： Entomological Society of America

ISSN： 1938-291X

Source： Journal of Economic Entomology, Vol.39, Iss.6, 1946-12, pp. : 812-813

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