Sex identification of adults and pupae of a birch defoliator, Pheumaptera hastata, in interior Alaska
By: by Richard A. Werner.
Contributors: United States Pacific Northwest Forest and Experiment Station.
Series: Research note PNW -- 275.; USDA Forest Service research note PNW -- 275.; Research note PNW -- 275.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Nothwest Forest and Range Experiment Station
Published: 1976
Place of publication: Portland, Or
Language: eng
Subjects: Birch -- Diseases and pests
Notes: Item 83-B.

Includes bibliographical references (p. 4).