TY  - GEN
AU  - Sousa, L. Ribeiro E., ed.
AU  - Grossmann, N.F., ed.
TI  - Safety and environmental issues in rock engineering : proceedings of ..
PY  - 1993///-1995
CY  - Roterdam
PB  - A.A. Balkema
KW  - ACCIDENT PREVENTION
KW  - MINES AND MINING
KW  - ROKS
KW  - ROCK DRILLING
N1  - Text in English, Potuguese & German. 2 vols 65610-vol.1- 90-5410-340-X ; 65611-vol.2- 90-5410-341-8
ER  -