Western spruce budworm egg masses for predicting defoliation potential in the northern region
Subtitle: progress report
By: by Scott Tunnock.
Contributors: United States. Forest Service. Northern Region. State & Private Forestry.
Series: Insect disease report; Report -- 74-27.; Report (United States. Forest Service. Northern Region) -- no. 74-27.
Publisher: USDA Forest Service, Northern Region, State & Private Forestry
Published: 1974
Place of publication: Missoula, Mont
Language: eng
Number of pages: 10
Subjects: Defoliation -- Montana.; Defoliation -- Idaho.; Western spruce budworm -- Montana.; Western spruce budworm -- Idaho.
Notes: Caption title.

"December 1974."

Also available online.