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Progress in coal mining technology in the USSR
Dokukin, Aleksandr V. - In: Future coal supply for the world energy balance : third …, (pp. 183-194). 1979
Persistent link: https://www.econbiz.de/10002101707
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The diffusion of machine cutting in the British coal industry, 1902-1938
Greasley, David - In: Explorations in economic history : EEH 19 (1982) 3, pp. 246-268
Persistent link: https://www.econbiz.de/10002519020
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The coal-mining industry of the U.S.S.R.
1964
Persistent link: https://www.econbiz.de/10003087294
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Roof supports
1958
Persistent link: https://www.econbiz.de/10003102343
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The Chinese coal industry
Joseph Crosfield & Sons ldt, soap manufacturers - 1962
Persistent link: https://www.econbiz.de/10003024808