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Brief information on pine leaf scale and its control

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By: Hopkins, A. D. (Andrew Delmar), - United States. Bureau of Entomology. - United States. Bureau of Entomology and Plant Quarantine.

Publication info: Washington, D.C, U.S. Department of Agriculture, Bureau of Entomology, 1916

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

Subjects: Black pine leaf scale Control Scale insects