Controlling important fungous and insect enemies of the pear in the humid sections of the Pacific Northwest /

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Bibliographic Details
Main Author: Fisher, D. F.
Format: Texto biblioteca
Language:d
Published: Washington, D.C. : U.S. Dept. of Agriculture, 1919
Subjects:PEAR-DISEASES AND PESTS-NORTHWESTERN STATES, Newcomer, E. J.,
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