How to tell Engelmann from blue spruce in the Southwest
By: John R. Jones, Nelson T. Bernard.
Contributors: Bernard, Nelson T., 1925-; Rocky Mountain Forest and Range Experiment Station (U.S.); United States. Forest Service.
Series: USDA Forest Service general technical report RM -- 34.; General technical report RM -- 34.
Publisher: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1977
Place of publication: [Fort Collins, Colo.]
Language: eng
Number of pages: 10
Subjects: Engelmann spruce; Spruce -- Southwestern States
Notes: Issued Feb. 1977.

Bibliography: p. 10.