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Filtering by: Subject Conifers -- Diseases and pests -- United States

Some of the principal insect enemies of coniferous forests in the United States

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Department of Agriculture

Abstract:

Reprint from Yearbook of Department of Agriculture for 1902.

Resource Type:

Journal
The Black Hills beetle

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Bureau of Entomology

Resource Type:

Technical Report