Western spruce budworm egg masses for predicting defoliation potential in the northern region
An edition of Western spruce budworm egg masses for predicting defoliation potential in the northern region (1974)
progress report
By Scott Tunnock
Publish Date
1974
Publisher
USDA Forest Service, Northern Region, State & Private Forestry
Language
eng
Pages
10
Description:
subjects: Defoliation, Western spruce budworm