1977. Don Goheen collecting data in a ponderosa pine stand.

Don Goheen collecting data in a ponderosa pine stand.

 

Photo by: Unknown

Date: c.1977

 

Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection.

Source: Region 6, Forest Health Protection slide collection; Regional Office, Portland, Oregon.

 

Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth

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