TY  - RPRT
TI  - Wilderness permit compliance and validity
AU  - J. W. van Wagtendonk
AU  - J.M. Benedict
PY  - 1980
DO  - 10.1093/jof/78.7.399
UR  - https://pubs.usgs.gov/publication/1007467
ID  - 1007467
ER  -