Hemlock sawfly
By: John S. Hard, Torolf R. Torgersen, and Donald C. Schmiege.
Contributors: Torgersen, Torolf R.; Schmiege, Donald C.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.).; United States. Forest Service.
Edition: [Rev. Aug. 1976]
Series: Forest insect & disease leaflet ; 31; Forest insect & disease leaflet -- 31.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1976
Place of publication: Portland, Or
Language: eng
Subjects: Hemlock sawfly.
Notes: Caption title.

Series formerly entitled Forest pest leaflet.

Bibliography: p. 7.

Also issued online.