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Difficulties encountered in mine ventilation; examples of ventilating practice, featuring Jeffrey Multi-Blade fan. Before Coal Min. Inst. America.
Difficulties encountered in mine ventilation; examples of ventilating practice, featuring Jeffrey Multi-Blade fan. Before Coal Min. Inst. America.
Practical mine ventilation
Coal Min
Steinheiser, G. (Autor:in)
Coal Mining ; 8
1931
3 pages
Aufsatz (Zeitschrift)
Englisch
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