Disturbance of soil and vegetation by the Johnson Valley-Parker Motorcycle Race of October 8, 1983, in Wilderness Study Area 304A, California and vicinity
By: by H.G. Wilshire.
Contributors: Geological Survey (U.S.)
Series: Open-file report -- 84-277.; Open-file report (Geological Survey (U.S.)) -- 84-277.
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1984
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Arid regions ecology -- California.
Notes: Microfiche. [Denver, Colo. : U.S. Geological Survey, 1984?]. 1 microfiche ; 11 x 15 cm.

Bibliography: p. 3.