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Factory ventilation in "black-out"
Illustrated descriptions of air-pump roof ventilator, light trap roof ridge ventilator, extraction fan in wall and protected propeller type fan.
Factory ventilation in "black-out"
Illustrated descriptions of air-pump roof ventilator, light trap roof ridge ventilator, extraction fan in wall and protected propeller type fan.
Factory ventilation in "black-out"
Indus Heating Engr
1942
2 pages
Article (Journal)
English
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