TY  - BOOK
AU  - Gregory,Cedric E.
TI  - Rudiments of Mining practice
SN  - 0878490426
PY  - 1983///
CY  - Federal republic of Germany
PB  - Trans Tech Publications
KW  - MinerÃ­a
KW  - spines
KW  - Libro
KW  - unescot
N1  - LIFBI
ER  -