Guide to the study of insects : and a treatise on those injurious and beneficial to crops for the colleges, farm-schools, and agriculturists Packard, A. S. (Alpheus Spring), 1839-1905 creator text book New York Henry Holt 1889 1889 9th ed.
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ENG Beneficial insects Insect pests Insects QL 463 .P32 1889 ROMU https://www.biodiversitylibrary.org/bibliography/28767 10.5962/bhl.title.28767 OTU