TY  - RPRT
TI  - Dissolved metals and associated constituents in abandoned coal-mine discharges, Pennsylvania, USA. Part 2: Geochemical controls on constituent concentrations
AU  - C.A. Cravotta
PY  - 2008
DO  - 10.1016/j.apgeochem.2007.10.003
UR  - https://pubs.usgs.gov/publication/70033617
ID  - 70033617
ER  -