Stand and tree characteristics influencing density of fir engraver beetle attack scars in white fir
By: George T. Ferrell.
Contributors: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Series: Research paper PSW -- 97.; Research paper PSW -- 97.
Publisher: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1973
Place of publication: Berkeley, Calif
Language: eng
Subjects: Fir -- Diseases and pests; Abies concolor -- Diseases and pests; Scolytus ventrabis
Notes: Cover title.

Includes bibliographical references (p. 8).