01382nam a2200385I 4500102339171MiAaHDL20180416000000.0m d cr bn ---auaua880308s1941 dcua f000 0 eng 41046466sdr-ucsd.b37589787sdr-hvd.990030304460203941DLCCLUCUSOCoLCUtOrBLWHC106.4.A2 no.4Pr 32.309:4(OCoLC)17595841United States.Bureau of MinesResearch and progress in the production and use of coal /by A.C. Fieldner and W.E. Rice[Washington] :[U.S. Govt. Print. Off.],1941iv, 49 pages including tables. ;27 cmtexttxtrdacontentunmediatednrdamediavolumencrdacarrier[U.S.] National Resources Planning Board. Technical paper,no. 4Prepared by the Bureau of Mines. cf. p. ivMode of access: Internet.Coal mines and miningCoalRice, W. E.(William Elmer),1897-1968Fieldner, Arno Carl,1881-196610233917120150120163405.020180416000000.020180417090858.02024-05-01T17:59:36Z2024-05-01T17:30:02ZSDR-UCSDIII - MILLENIUMprepare.pl-004-007BKsdr-ucsd.b37589787uc1SDRUCSDuc1.31822024232738UC.b37589787UCUCSD20240501googleuc1.318220242327381941pdbibUS fed docHVDHVD20250816googlehvd.320440317459461941pdbibUS fed doc