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Recovery of By-Products from Bituminous Coal Au:Plank, E.C.
Publication: Purdue Engineer
Subject: Coal
Date: 1918
No. 14 p. 11-22
Publication: Purdue Engineer
Subject: Coal
Date: 1918
No. 14 p. 11-22
The Formation of Coal IL. Au:Floreck, R.S.
Publication: Purdue Engineer
Subject: Coal
Date: 5/1922
vol. 27, No. 8 p. 171
Publication: Purdue Engineer
Subject: Coal
Date: 5/1922
vol. 27, No. 8 p. 171
