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Roy E. Campbell

Bureau of Entomology

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Publication

Featured researches published by Roy E. Campbell.

Journal of Economic Entomology | 1954

Control of the Pepper Weevil

John C. Elmore; Roy E. Campbell

Journal of Economic Entomology | 1933

Chloropicrin as a Soil Insecticide for Wireworms

M. W. Stone; Roy E. Campbell

Journal of Economic Entomology | 1924

Preliminary Report on The Use Of Calcium Cyanide As A Soil Fumigant For Wireworms

Roy E. Campbell

Journal of Economic Entomology | 1924

Injuries to Peppers in California by Anthonomus Eugenii Cano

Roy E. Campbell

Journal of Economic Entomology | 1943

Aphid Increase and Plant Injury Following the Use of Calcium Arsenate on Peppers

John C. Elmore; Roy E. Campbell

Journal of Economic Entomology | 1932

The Effect of Sulphur on Wireworms

Roy E. Campbell; M. W. Stone

Journal of Economic Entomology | 1949

Insecticides for the Control of Thrips on Onions Grown for Seed in Southern California

J. Wilcox; A. F. Howland; Roy E. Campbell

Journal of Economic Entomology | 1941

An Unusual Infestation of Cabbage Aphids, Aphis brassicae L.

Roy E. Campbell

Journal of Economic Entomology | 1923

Notes on Nicotine Dust Progress

Roy E. Campbell

Journal of Economic Entomology | 1921

Two Mechanical Devices for Controlling Western Cucumber Beetles

Roy E. Campbell; Walter H. Nixon

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