Self-fertility of a central Oregon source of Ponderosa pine
By: Frank C. Sorensen.
Series: USDA Forest Service research paper PNW -- 109.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service
Published: 1970
Place of publication: Portland, Or
Language: eng
Subjects: Fertilization of plants.; Ponderosa pine -- Reproduction.
Other titles: Self fertility of a central Oregon source of Ponderosa pine.
Notes: Cover title.