Artificial ripening of sugar pine seeds
By: Stanley L. Krugman.
Series: Research paper PSW -- 32.; U.S. Forest Service research paper PSW -- 32.
Publisher: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1966
Place of publication: Berkeley, Calif
Language: eng
Subjects: Sugar pine -- Seeds
Notes: Cover title.