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George L. Kerr

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Practical coal-mining
Practical coal mining
Practical Coal Mining A Manual for Managers, Under-Managers, Colliery Engineers, and Others
Practical Coal Mining A Manual for Managers, Under-Managers, Colliery Engineers, and Others
Practical Coal-Mining A Manual for Managers, Under-Managers, Colliery Engineers, and Others (Classic Reprint)
Practical Coal Mining A Manual for Managers, Under-Managers, Colliery Engineers, and Others
Practical Coal Mining A Manual for Managers, Under-Managers, Colliery Engineers, and Others
George L. Kerr — Books & Biography | Menrva Books