Estimating cubic volume of small diameter tree-length logs from ponderosa and lodgepole pine - Plank, Marlin E.; Cahill, James M.; Pacific Northwest Forest; Range Experiment Station (Portland, Or.) ([Portland, Or.], U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1984)
https://www.biodiversitylibrary.org/bibliography/70831
Keywords: Forests and forestry|Lodgepole pine|Measurement|Ponderosa pine|