01274nam 2200361Ia 450 991069874250332120090417132824.0(CKB)5470000002396431(OCoLC)318649510(EXLCZ)99547000000239643120090417d1967 ua 0engurmn||||a||||txtrdacontentcrdamediacrrdacarrierReports and maps of the Geological Survey released only in the open files, 1966[electronic resource] /by Betsy A. Weld, Margaret S. Griffin, and George W. BrettWashington :U.S. Dept. of the Interior, Geological Survey,1967.14 pages DJVU, image fileGeological Survey circular ;528Title from title screen (viewed Apr. 17, 2009).Includes index.Bibliographies.lcgftWeld Betsy A1388375Griffin Margaret S1388376Brett George W1388377Geological Survey (U.S.)GPOGPOBOOK9910698742503321Reports and maps of the Geological Survey released only in the open files, 19663465534UNINA