TY  - RPRT
TI  - Coal Rank and Stratigraphy of Pennsylvanian Coal and Coaly Shale Samples, Young County, North-Central Texas
AU  - Edgar H. Guevara
AU  - Caroline Breton
AU  - Paul C. Hackley
PY  - 2007
DO  - 10.3133/ofr20071313
UR  - https://pubs.usgs.gov/publication/ofr20071313
ID  - ofr20071313
ER  -