TY  - BOOK
ED  - The American Institute of Mining and Metallurgical Engineers.
TI  - Coal preparation
PY  - 1943///
CY  - New York
PB  - Am.Inst.Min.Met.Eng.
KW  - MinerÃ­a
KW  - CarbÃ³n
KW  - ExplotaciÃ³n minera
KW  - Libro
ER  -