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The corn leaf-aphis and corn root-aphis / F. M. Webster

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By: Webster, F. M. (Francis Marion), - United States. Bureau of Entomology. - United States. Department of Agriculture.

Publication info: Washington, D.C, U.S. Dept. of Agriculture, Bureau of Entomology, 1907

Holding Institution: U.S. Department of Agriculture, National Agricultural Library

Subjects: Agricultural pests Aphids Aphis Corn Corn root-aphis Diseases and pests
The corn root-aphis

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By: Flint, W. P. (Wesley Pillsbury), - Illinois. Natural History Survey Division

Publication info: Urbana, Ill, Illinois Natural History Survey, 1919

Holding Institution: University Library, University of Illinois Urbana Champaign

Subjects: Corn Corn root-aphis Diseases and pests