Effect of thinning second-growth ponderosa pine stands on incidence of mountain pine beetle infestation
Subtitle: progress report
By: by Mark D. McGregor.
Contributors: United States. Forest Service. Northern Region. State & Private Forestry.
Series: Insect disease report; Report -- 73-6.; Report (United States. Forest Service. Northern Region) -- no. 73-6.
Publisher: U.S. Dept. of Agriculture, Forest Service, Northern Region
Published: 1973
Place of publication: Missoula, Mont
Language: eng
Subjects: Mountain pine beetle -- Control -- Montana.; Ponderosa pine -- Thinning -- Montana.
Notes: "March 1973."

Caption title.

Also issued online.