Pinus ponderosa
Subtitle: geographic races and subspecies based on morphological variation
By: Robert Z. Callaham
Contributors: Pacific Southwest Research Station
Series: Research paper PSW -- RP-265; Research paper PSW -- RP-265.
Publisher: United States Department of Agriculture, Forest Service, Pacific Southwest Research Station
Published: 2013
Place of publication: Albany, CA
Language: eng
Number of pages: 53
Subjects: Ponderosa pine; Classification; Identification
Other titles: Geographic races and subspecies based on morphological variation
Notes: Cover title.

"September 2013."

Format not distributed to depository libraries.

Includes bibliographical references.