The fir engraver
Subtitle: a serious enemy of western true firs
By: by George R. Struble
Series: Production research report -- no. 11
Publisher: U.S. Dept. of Agriculture, Forest Service
Published: 1957
Place of publication: Washington, D.C
Language: eng
Number of pages: 18
Subjects: Fir; Scolytus; Diseases and pests
Notes: Cover title.

Supersedes U.S. Dept. of Agriculture Circular 419, The Fir engraver, a serious enemy of white fir and red fir.

Includes bibliographical references.