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Cypress bark scale

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By: Herbert, F. B. (Frank Barnes),

Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1920

Holding Institution: U.S. Department of Agriculture, National Agricultural Library
The European elm scale in the west

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By: Herbert, F. B. (Frank Barnes),

Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1924

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