TY  - RPRT
TI  - Interpretation of coal quality data : the inorganic constituents, with comments on the quality of coal from the Sonda Coal Field, Sindh Province, Pakistan
AU  - Robert B. Finkelman
AU  - C.L. Oman
PY  - 1995
DO  - 10.3133/ofr93591
UR  - https://pubs.usgs.gov/publication/ofr93591
ID  - ofr93591
ER  -