Spear-marked black moth
By: [Richard A. Werner and Bruce H. Baker].
Contributors: Baker, Bruce H.; United States. Forest Service.
Series: Forest insect & disease leaflet ; 156; Forest insect & disease leaflet -- 156.
Publisher: Dept. of Agriculture, Forest Service
Published: 1977
Place of publication: [Washington]
Language: eng
Subjects: Geometridae -- Control.; Moths -- Control.; Birch -- Diseases and pests.
Notes: Caption title.

Issued July 1977.

Bibliography: p. 7.

Also issued online.