TY  - RPRT
TI  - Digital computer modeling for estimating mine-drainage problems, Piceance Creek basin, northwestern Colorado
AU  - Donald L. Coffin
AU  - John D. Bredehoeft
PY  - 1969
DO  - 10.3133/ofr6953
UR  - https://pubs.usgs.gov/publication/ofr6953
ID  - ofr6953
ER  -