Ponderosa pine saplings respond to control of spacing and understory vegetation
By: James W. Barrett.
Series: USDA Forest Service research paper PNW -- 106.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture
Published: 1970
Place of publication: Portland, Or
Language: eng
Number of pages: 16
Subjects: Ponderosa pine.; Ponderosa pine -- Spacing.
Notes: Cover title.

Bibliography: p. 16.