TY  - RPRT
TI  - Coal resources of the Sonda coal field, Sindh Province, Pakistan
AU  - R. E. Thomas
AU  - Khan M. Riaz
AU  - Khan S. Ahmed
PY  - 1993
DO  - 10.1016/0166-5162(93)90047-e
UR  - https://pubs.usgs.gov/publication/70017386
ID  - 70017386
ER  -