Underground Mining: Longwalls Mine Safely at Low Cost Per Ton: Fid-Bau Portal

BKL: 50.00 Technik allgemein: Allgemeines / 50.00 / 57.00 / 57.00 Bergbau: Allgemeines / 56.20 Ingenieurgeologie, Bodenmechanik / 56.20
Lokalklassifikation TIB: 770/4515/4800

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