Key to identifying young North American spruce seedlings
By: Richard M. Jeffers.
Contributors: North Central Forest Experiment Station (Saint Paul, Minn.)
Series: Research note NC -- 172.
Publisher: North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1974
Place of publication: St. Paul, Minn
Language: eng
Subjects: Spruce -- Identification; Spruce -- North America -- Identification
Notes: Caption title.

Includes bibliographical references.