DIN 21913-6:2004-07 Mine plans - Deep mining - Part 6: Safekeeping of mining produced hollows
标准编号:DIN 21913-6:2004-07
英文标题:Mine plans - Deep mining - Part 6: Safekeeping of mining produced hollows
德文标题:Bergmännisches Risswerk - Tiefbau - Teil 6: Verwahrung bergmännisch hergestellter Hohlräume
发布日期:2004-07
标准预览图


