Mine plans - Tectonic elements and figure of strata.
STANDARD published on 1.4.1996
Designation standards: DIN 21921:1996-04
Publication date standards: 1.4.1996
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: German technical standard
Category: Technical standards DIN
Bergmännisches Rißwerk - Tektonik und Formbeschreibung von Gesteinsschichten.