Yellow-headed spruce sawfly
By: by Louis F. Wilson
Contributors: United States. Forest Service
Series: Forest pest leaflet -- 69; Forest insect & disease leaflet -- 69.
Publisher: U.S. Dept. of Agriculture, Forest Service
Published: 1962
Place of publication: Washington, D.C.?]
Language: eng
Subjects: Yellow-headed spruce sawfly
Notes: Caption title.

"January 1962."

Includes bibliographical references (p. 4).