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

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