Provisional tree seed zones and transfer guidelines for Alaska
By: John N. Alden.
Contributors: Pacific Northwest Research Station (Portland, Or.)
Series: General technical report PNW -- GTR-270.; General technical report PNW -- 270.
Publisher: United States Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
Published: 1991
Place of publication: Portland, Or
Language: eng
Number of pages: 35
Subjects: Seeds -- Protection -- Alaska.; Endangered plants -- Alaska.; Forest microclimatology -- Alaska.
Notes: Cover title.

"May 1991."

One folded leaf of map in pocket.

Includes bibliographical references (p. 31-35).