Western spruce budworm egg mass-defoliation surveys
Subtitle: a working group progress report
By: compiled by David G. Grimble and Robert W. Young
Contributors: United States. Forest Insect and Disease Management. Methods Application Group
Series: Report -- no. 77-3; Report (United States. Forest Insect and Disease Management. Methods Application Group) -- no. 77-3.
Publisher: USDA, Forest Service, Forest Insect and Disease Management, Methods Application Group
Published: 1977
Place of publication: Davis, Calif
Language: eng
Number of pages: 21
Subjects: Diseases and pests; Choristoneura occidentalis; Douglas fir; Western spruce budworm; Defoliation
Notes: "June 1977."

Includes bibliographical references (leaf 16).

Photocopy.