TY  - RPRT
TI  - Outdoors America: recreational opportunities on public lands
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1998
DO  - 10.3133/70189681
UR  - https://pubs.usgs.gov/publication/70189681
ID  - 70189681
ER  -