Potential for the pine butterfly defoliation on the Flathead Indian Reservation in 1973
By: by Wayne Bousfield.
Contributors: United States. Forest Service. Northern Region. State & Private Forestry.
Series: Insect and disease report; Report -- no. I-72-9.; Report (United States. Forest Service. Northern Region) -- no. I-72-9.
Publisher: U.S.D.A. Forest Service, Northern Region, Division of State and Private Forestry
Published: 1972
Place of publication: Missoula, Mont
Language: eng
Subjects: Pine butterfly -- Montana -- Flathead Indian Reservation.; Ponderosa pine -- Diseases and pests -- Montana -- Flathead Indian Reservation.
Notes: Caption title.

"November 1972."

Also available online.