TY  - RPRT
TI  - Hydrology and geochemistry of a surface coal mine in northwestern Colorado
AU  - R.S. Williams
AU  - G. M. Clark
PY  - 1994
DO  - 10.3133/wri924187
UR  - https://pubs.usgs.gov/publication/wri924187
ID  - wri924187
ER  -