Controlling important fungous and insect enemies of the pear in the humid sections of the Pacific Northwest /
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Main Author: | Fisher, D. F. |
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Format: | Texto biblioteca |
Language: | d |
Published: |
Washington, D.C. : U.S. Dept. of Agriculture,
1919
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Subjects: | PEAR-DISEASES AND PESTS-NORTHWESTERN STATES, Newcomer, E. J., |
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