The larger apple-tree borers Chittenden, F. H. (Frank Hurlbut), 1858-1929 creator United States. Bureau of Entomology. contributor United States. Department of Agriculture. contributor text book Washington, D.C U. S. Dept. of Agriculture, Bureau of Entomology 1907 1907 Third revision.
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ENG Caption title. Circular No. 32, Third Revise. "Issued December 10, 1907." At head of title: U.S. Department of Agriculture, Bureau of Entomology. The round-headed apple-tree borer. pp. 32. Distribution. pp. 2. Food plants and nature of infestation -- Life history. pp. 3. Natural enemies -- Methods of control. pp. 5. The spotted apple-tree borer. pp. 7. The flat-headed apple-tree borer -- General appearance and nature of injury. pp. 8. Natural history and habits. pp. 10. Natural enemies -- Remedies. pp. 11. Apples Apple-tree borers Diseases and pests Circular (United States. Bureau of Entomology), no. 32 https://www.biodiversitylibrary.org/bibliography/63553 810278205 10.5962/bhl.title.63553 LHL