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University of California Libraries contributed to BHL
Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists. By A. S. Packard, jr. With fifteen plates and six hundred and seventy wood-cuts.
Packard, A. S.
keywords: Insect pests;    Insects;   
Subject:植物学
美国
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