TY  - RPRT
TI  - Vertical variations of mercury in Pennsylvanian coal beds from Indiana
AU  - Maria Mastalerz
AU  - A. Drobniak
PY  - 2005
DO  - 10.1016/j.coal.2005.02.004
UR  - https://pubs.usgs.gov/publication/70029554
ID  - 70029554
ER  -