Standard
[WITHDRAWN]
DIN 21631:1993-01
Air regulating systems in mining; wing air doors for travelling tracks; air doors without pressure reduction
German title
Wetterbauwerke im Bergbau; Flügeltüren für den Fahrweg; Nicht druckentlastete Wettertüren
Publication date
1993-01
Original language
German
Pages
8
Publication date
1993-01
Original language
German
Pages
8
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