Accuracy of determining mountain pine beetle attacks in ponderosa pine utilizing pitch tubes, frass, and entrance holes
By: S.A. Mata, Jr.
Contributors: Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Series: Research note RM -- 222.
Publisher: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1972
Place of publication: Fort Collins, Colo
Language: eng
Subjects: Ponderosa pine -- Diseases and pests; Mountain pine beetle
Notes: Caption title.

Includes bibliographical references (p. 2).