01879oam 2200565 450 991071186830332120190201080552.0(CKB)5470000002487397(OCoLC)953695367(OCoLC)995470000002487397(EXLCZ)99547000000248739720160718d1976 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierBibliography and index of U.S. Geological Survey publications relating to coal, 1971-1975 /by Flora K. Walker[Reston, Virginia] :United States Department of the Interior, Geological Survey,1976.1 online resource (v, 32 pages)Geological Survey circular ;742"A supplement to Geological Survey bulletin 1377.""Supersedes Geological Survey circular 709."Coal mines and miningUnited StatesBibliographyCoalUnited StatesBibliographyCoal mines and miningUnited StatesIndexesCoalUnited StatesIndexesCoalfastCoal mines and miningfastUnited StatesfastBibliography.fastBibliographies.lcgftCoal mines and miningCoalCoal mines and miningCoalCoal.Coal mines and mining.Walker Flora K.1412341Geological Survey (U.S.),COPCOPOCLCOOCLCFOCLCAGPOBOOK9910711868303321Bibliography and index of U.S. Geological Survey publications relating to coal, 1971-19753528557UNINA