Mine Gases and Ventilation: Textbook for Students of Mining, Mining Engineers and Candidates Preparing for Mining Examinations Designed for Working Out the Various Problems That Arise in the Practice of Coal Mining, as They Relate to the Safe and Effecien by James Thom Beard

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Mine Gases and Ventilation: Textbook for Students of Mining, Mining Engineers and Candidates Preparing for Mining Examinations Designed for Working Out the Various Problems That Arise in the Practice of Coal Mining, as They Relate to the Safe and Effecien

James Thom Beard - Mine Gases and Ventilation: Textbook for Students of Mining, Mining Engineers and Candidates Preparing for Mining Examinations Designed for Working Out the Various Problems That Arise in the Practice of Coal Mining, as They Relate to the Safe and Effecien
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