NA 005
DIN Standards Committee Building and Civil Engineering
Standards
[Withdrawn]
DIN 21919-2
DIN 21919-2
Mine plans - Stratigraphy - Part 2: Regional and local subdivisions; hard coal
Title (German)
Bergmännisches Rißwerk - Stratigraphie - Teil 2: Regionale und lokale Gliederungen; Steinkohle