TY  - BOOK
AU  - Chironis, Nicholas P.,
TI  - Coal age second operating handbook of undergraund mining
SN  - 070114617
AV  - TN802.H8 C44
PY  - 1980///
CY  - New York
PB  - Coal age mining informational services
KW  - Minas de carbón
KW  - Manuales
ER  -