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summary
Auxiliary ventilation for mining - Flexible plastic ventilation ducts for exhaust and forced ventilation - Spiral ventilation ducts. (Sonderbewetterung im Bergbau - Wetterlutten aus faltbarem Kunststoff für saugende und blasende Bewetterung - Spirallutten.)
Details
Publisher
DIN
File size
209.16 KB
Pages
8
Format
PDF
Publication date
2010-07-01