TY  - RPRT
TI  - Disturbance of soil and vegetation by the Johnson Valley-Parker motorcycle race of October 8, 1983, in Wilderness Study Area 304A, California and vicinity
AU  - H. G. Wilshire
PY  - 1984
DO  - 10.3133/ofr84277
UR  - https://pubs.usgs.gov/publication/ofr84277
ID  - ofr84277
ER  -