INTERNATIONAL SYMPOSIUM ON UNDERGROUND MINING METHODS AND TECHNOLOGY(1986 : NOTTINGHAM)
Underground mining methods & technology - Amsterdam Elsevier 1987 - xii,472p. : ill., photos - Advances in mining science and technology ; no 1 .
0444428453
622 / I6
Underground mining methods & technology - Amsterdam Elsevier 1987 - xii,472p. : ill., photos - Advances in mining science and technology ; no 1 .
0444428453
622 / I6