TY  - BOOK
T1  - Geology, mining, and methane content of the Freeport and Kittanning coalbeds in Indiana and surrounding counties, Pa. /
DA  - [1979]
CY  - Washington :
AU  - Puglio, D. G.
AU  - Iannacchione, A. T.,
CN  - TN805.P4
CN  - TN805.P4
PB  - U.S. Dept. of the Interior, Bureau of Mines,
PP  - Washington :
PY  - [1979]
ID  - 31904
KW  - Coal mines and mining
KW  - Coal
KW  - Firedamp.
TI  - Geology, mining, and methane content of the Freeport and Kittanning coalbeds in Indiana and surrounding counties, Pa. /
ER  -