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A platform for research: civil engineering, architecture and urbanism
Analyses of Pennsylvania bituminous coals
Analyses from July 1 1937 to June 30 1941, supplementing Tech Paper n 590, which included all analyses made before July 1 1937. (10¢)
Analyses of Pennsylvania bituminous coals
Analyses from July 1 1937 to June 30 1941, supplementing Tech Paper n 590, which included all analyses made before July 1 1937. (10¢)
Analyses of Pennsylvania bituminous coals
U S Bur Mines -- Tech Paper
Snyder, N.H. (author) / Swingle, R.J. (author)
1942
19 pages
Report
English
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