TY  - RPRT
TI  - Choosing indicators of natural resource condition: A case study in Arches National Park, Utah, USA
AU  - J. Belnap
PY  - 1998
DO  - 10.1007/s002679900135
UR  - https://pubs.usgs.gov/publication/70020769
ID  - 70020769
ER  -