Estimating Douglas-fir site quality from aerial photographs
By: by Grover A. Choate.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research paper -- no. 45.; Research paper (Pacific Northwest Forest and Range Experiment Station (Portland, Or.)) -- no. 45.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1961
Place of publication: [Portland, Or
Language: eng
Number of pages: 26
Subjects: Douglas fir -- Habitat -- Oregon -- Evaluation.; Douglas fir -- Habitat -- Washington (State) -- Evaluation.; Forest site quality -- Oregon -- Evaluation.; Forest site quality -- Washington (State) -- Evaluation.; Aerial photography in forestry -- Oregon.; Aerial photography in forestry -- Washington (State)
Notes: "October 1961."

Also issued online.

Copy 2 is a photocopy.