01781oam 2200481 450 991070763620332120161007151959.0(CKB)5470000002466178(OCoLC)886546848(EXLCZ)99547000000246617820140812d1972 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierUnderclay deposits of Somerset and eastern Fayette Counties, Pennsylvania /by John W. Hosterman[Washington, D.C.] :United States Department of the Interior, Geological Survey,1972.Washington :United States Government Printing Office.1 online resource (iii, 17 pages, 2 pages of plates) illustration, mapGeological Survey bulletin ;1363Title from title screen (viewed August 4, 2014)."A geological, mineralogical, and chemical study of underclay beds in the Allegheny Formation of southwestern Pennsylvania."Includes bibliographical references (pages 16-17).ClayPennsylvaniaSomerset CountyClayPennsylvaniaFayette CountyClayfastPennsylvaniaFayette CountyfastPennsylvaniaSomerset CountyfastClayClayClay.Hosterman John W(John Wallace),1923-1391885Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910707636203321Underclay deposits of Somerset and eastern Fayette Counties, Pennsylvania3468961UNINA