Seed production of central Oregon ponderosa and lodgepole pines
By: Walter G. Dahms, James W. Barrett.
Series: USDA Forest Service research paper PNW -- no. 191.; USDA Forest Service research paper PNW -- 191.
Publisher: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1975
Place of publication: Portland, Or
Language: eng
Number of pages: 13
Notes: Bibliography: p. 12-13.