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Coal mining
Jones, Donald Campbell (contributor);  … - Pennsylvania State College / Mineral Industries … - 1949 - 3d ed
Persistent link: https://www.econbiz.de/10002850520
Cover Image
Coal mining ; 1
Jones, Donald Campbell (contributor);  … - Pennsylvania State College / Mineral Industries … - 1950 - 3. ed
Persistent link: https://www.econbiz.de/10003169462
Cover Image
Coal mining ; 2
Jones, Donald Campbell (contributor);  … - Pennsylvania State College / Mineral Industries … - 1952 - 3d ed
Persistent link: https://www.econbiz.de/10003169466
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Coal mining ; 3
Jones, Donald Campbell (contributor);  … - Pennsylvania State College / Mineral Industries … - 1954 - 3d ed
Persistent link: https://www.econbiz.de/10003169469