TY  - RPRT
TI  - Evaluating wilderness recreational opportunities: application of an impact matrix
AU  - Thomas J. Stohlgren
AU  - David J. Parsons
PY  - 1992
DO  - 10.1007/bf02400079
UR  - https://pubs.usgs.gov/publication/70126939
ID  - 70126939
ER  -