TY  - RPRT
TI  - Petrography and geochemistry of the San Miguel lignite, Jackson Group (Eocene), south Texas
AU  - Peter D. Warwick
AU  - Sharon S. Crowley
AU  - Leslie F. Ruppert
AU  - James Pontolillo
PY  - 1996
DO  - 10.1016/0146-6380(96)00018-6
UR  - https://pubs.usgs.gov/publication/70019352
ID  - 70019352
ER  -