Pine pollen collection dates
Subtitle: annual and geographic variation
By: by J.W. Duffield
Contributors: California Forest and Range Experiment Station
Edition: Rev.
Series: Research note / California Forest and Range Experiment Station -- no. 85; Research note (California Forest and Range Experiment Station) -- no. 85.
Publisher: California Forest and Range Experiment Station
Published: 1953
Place of publication: Berkeley, Calif
Language: eng
Subjects: Breeding; Pine; Pollen management
Notes: Caption title.

"March 3, 1953."

"A revision of Duffield, J. W. 1947. Dates and places of pollen collection by the Institute of Forest Genetics. Calif. Forest and Range Exp. Sta. Research Note no. 54."--p.1.

Includes bibliographical references.