TY  - BOOK
AU  - Cross,Aureal T.
AU  - Kottlowski,Frank Edward
AU  - Meyerhoff,Arthur A.
TI  - Coal resources of the americas: selected papers 
T2  - Special papers / Geological Society of America
SN  - 0813721792
AV  - TN805.A1 C62
PY  - 1978///]
CY  - Boulder, Colorado
PB  - Geological Society of America
KW  - Carbón
KW  - America
KW  - Discursos, ensayos, conferencias
ER  -