TY  - RPRT
TI  - Digital mine claim density map for Federal lands in Montana, 1996
AU  - Harry W. Campbell
AU  - Paul C. Hyndman
PY  - 1998
DO  - 10.3133/ofr98489
UR  - https://pubs.usgs.gov/publication/ofr98489
ID  - ofr98489
ER  -