Photo stratification improves northwest timber volume estimates
By: Colin D. MacLean.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research paper PNW -- no. 150.; USDA Forest Service research paper PNW -- 150.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service
Published: 1972
Place of publication: Portland, Or
Language: eng
Number of pages: 10
Subjects: Forests and forestry -- Remote sensing.; Forests and forestry -- Measurement.; Aerial photography in forestry.
Notes: Cover title.

Bibliography: p. 10.

Also issued online.