Mine plans - Objects on the surface and contour lines.
STANDARD published on 1.3.2008
Designation standards: DIN 21911:2008-03
Publication date standards: 1.3.2008
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: German technical standard
Category: Technical standards DIN
Bergmännisches Risswerk - Tagesgegenstände und Höhenlinien.