Seed zones and breeding zones for Sugar Pine in southwestern Oregon
By: Robert K. Campbell and Albert I. Sugano
Contributors: Sugano, Albert I; Pacific Northwest Research Station (Portland, Or.)
Series: Research paper PNW -- RP-383; Research paper PNW -- 383.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
Published: 1987
Place of publication: Protland, Or
Language: eng
Number of pages: 18
Subjects: Sugar pine -- Oregon; Plants -- Variation
Notes: Distributed to depository libraries in microfiche

"July 1987."

Includes bibliographical references (p. 17-18)