Hemlock sawfly
By: by Donald C. Schmiege
Contributors: United States. Forest Service
Series: Forest pest leaflet -- 31; Forest insect & disease leaflet -- 31.
Publisher: U.S. Dept. of Agriculture, Forest Service
Published: 1970
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Hemlock sawfly
Notes: Caption title.