00986nam0-2200289---450-99000969478040332120130315123510.0000969478FED01000969478(Aleph)000969478FED0100096947820130315d1970----km-y0itay50------baengZAy-------001yyPlanning open pit minesproceedings of the symposium on the theoretical background to the planning of open pit mines with special reference to slope stability. Johannesburg, republic of South Africa, 29 August-4 September 1970P. W. J. Van RensburgJohannesburgA. A. Balkema1970XVI, 388 p.ill.30 cmScaviVan Rensburg,P. W. J.519286ITUNINARICAUNIMARCBK99000969478040332115 GT-N/1-172277DINIDDINIDPlanning open pit mines843066UNINA