Cone production by upper-slope conifers
By: Jerry F. Franklin.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research paper PNW -- 60.; Research paper PNW -- 60.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture
Published: 1968
Place of publication: Portland, Or
Language: eng
Number of pages: 21
Subjects: Conifers; Conifers -- Seeds; Forest regeneration -- Northwest, Pacific
Notes: Cover title.

Bibliography: p. 21.