Insect enemies of the pine in the Black Hills Forest Reserve : an account of results of special investigations, with recommendations for preventing losses
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Insect enemies of the pine in the Black Hills Forest Reserve : an account of results of special investigations, with recommendations for preventing losses
Hopkins, A. D. (Andrew Delmar), 1857-1948; United States. Division of Entomology
Name:insect enemies of the pine in the black hills forest reserve [ocr].pdf
Subject:Pine -- Diseases and pests -- Black Hills National Forest (S.D. and Wyo.) Wood borers -- Black Hills National Forest (S.D. and Wyo.) Forest insects -- Black Hills National Forest (S.D. and Wyo.) Insect pests -- Black Hills National Forest (S.D. and Wyo.) Plant parasites -- Black Hills National Forest (S.D. and Wyo.)