TY  - BOOK
T1  - Coal geology and coal, oil, and gas resources of the Erie and Frederick Quadrangles, Boulder and Weld counties, Colorado /
DA  - 1986.
CY  - Washington :
AU  - Spencer, Frank Darwyn,
VL  - 1619
CN  - QE75
CN  - QE75
PB  - U.S. G.P.O.,
PP  - Washington :
PY  - 1986.
N1  - Issued in portfolio (28 cm.) with 7 folded maps in pocket.
ID  - 119704
KW  - Coal
KW  - Coal
KW  - Petroleum
KW  - Petroleum
KW  - Natural gas
KW  - Natural gas
TI  - Coal geology and coal, oil, and gas resources of the Erie and Frederick Quadrangles, Boulder and Weld counties, Colorado /
ER  -