TY  - BOOK
AU  - Collier,Arthur J.
AU  - White,David
AU  - Girty,George Herbert
TI  - The Arkansas coal field,
T2  - U.S. Geological survey. Bulletin
AV  - QE75 .B9 no. 326
PY  - 1907///
CY  - Washington
PB  - Govt. print. off.
KW  - Coal
KW  - Arkansas
KW  - Paleontology
KW  - Carboniferous
ER  -