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Some observations on German coal research and developments
Methods of producing ultra-clean coal for electrode carbon in Germany
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Published Year
1940-1949 (2)
Subject
Coal--Germany (2) *
Coal mines and mining--Germany (1)
Coal--Research--Germany (1)
Author
Graham, H. G. (1)
Lowry, H. H. (1)
Rose, H. J. (1)
Schmidt, L. D. (1)
