Insects destructive to the Douglas-fir seed crop in California
Subtitle: a problem analysis
By: by Thomas W. Koerber.
Contributors: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Series: Technical paper -- no. 45.; Technical paper (Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)) -- no. 45.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station
Published: 1960
Place of publication: Berkeley, Calif
Language: eng
Number of pages: 36
Subjects: Douglas fir -- Seeds -- California.; Douglas fir -- Diseases and pests -- California.; Contarinia -- California.; Dioryctria -- California.; Tortricidae -- California.; Torymidae -- California.
Notes: Cover title.

"April 1960."

Includes bibliographical references (p. 26-30).