TY  - BOOK
AU  - Brawner,C.O.
AU  - Milligan,V.
TI  - Stability in open pit mining: proceedings of the first international conference Canadá, 1970
PY  - 1971///
CY  - New York
PB  - AIME
KW  - Minería
KW  - lemb
KW  - Libro
KW  - unescot
ER  -