TY  - BOOK
T1  - Origin of thick Lower Tertiary coal beds in the Powder River Basin, Wyoming and Montana--some paleogeographic constraints /
DA  - 1993.
CY  - Denver, CO :
CY  - Washington :
AU  - Seeland, David A.
VL  - 1917-Q
VL  - ch. Q
CN  - QE75
CN  - QE75
PB  - Dept. of the Interior, U.S. Geological Survey ;
PB  - U.S. G.P.O.,
PP  - Denver, CO :
PP  - Washington :
PY  - 1993.
ID  - 229682
KW  - Geology, Stratigraphic
KW  - Geology, Stratigraphic
KW  - Coal
TI  - Origin of thick Lower Tertiary coal beds in the Powder River Basin, Wyoming and Montana--some paleogeographic constraints /
ER  -