West Coast tree improvement programs
Subtitle: a break-even, cost-benefit analysis
By: F. Thomas Ledig, Richard L. Porterfield
Contributors: Porterfield, Richard L; Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Series: Research paper PSW -- 156
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station
Published: 1981
Place of publication: Berkeley, Calif
Language: eng
Subjects: Forest genetics -- Cost effectiveness; Ponderosa pine; Douglas fir; Trees -- Breeding -- Northwest, Pacific -- Cost effectiveness
Notes: "August 1981"--P. [2] of cover

Bibliography: p. 8