STEPHANSSON,O
ROCK BOLTING,THEORY AND APPLICATION IN MINING AND UNDERGROUND CONSTRUCTION INTER - ROTTERDAM A.A. Balkema 1984 - 26X18
622.2 S827
ROCK BOLTING,THEORY AND APPLICATION IN MINING AND UNDERGROUND CONSTRUCTION INTER - ROTTERDAM A.A. Balkema 1984 - 26X18
622.2 S827