TY  - BOOK
AU  - Sisselman,Robert
TI  - E&MJ operating handbook of mineral underground mining: V. 3 library of operation handbooks
U1  - 622.2 
PY  - 1978///
CY  - USA
PB  - McGraw-Hill
KW  - Ingenieria de minas
KW  - Manuales
N1  - Incluye:Indice
ER  -