Vegetational changes in Yosemite Valley
By: Harold F. Heady and Paul J. Zinke.
Contributors: Zinke, Paul J.
Series: National Park Service occasional paper ; no. 5; National Park Service occasional paper ;; no. 5.
Publisher: U.S. Dept. of the Interior : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1979
Place of publication: Washington
Language: eng
Number of pages: 25
Subjects: Plant ecology -- California -- Yosemite Valley.; Nature -- Effect of human beings on -- California -- Yosemite Valley.; Yosemite Valley (Calif.)
Notes: Bibliography: p. 22.