LEADER 01282nam 2200361Ia 450 001 9910698741203321 005 20090420080827.0 035 $a(CKB)5470000002396445 035 $a(OCoLC)318789973 035 $a(EXLCZ)995470000002396445 100 $a20090420d1964 ua 0 101 0 $aeng 135 $aurmn||||a|||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aReports and maps of the Geological Survey released only in the open files, 1963$b[electronic resource] /$fby Betsy A. Weld, Margaret S. Griffin, and George W. Brett 210 1$aWashington, D.C. :$cU.S. Dept. of the Interior, Geological Survey,$d[1964?] 215 $a13 pages $cDJVU, image file 225 1 $aGeological Survey circular ;$v488 300 $aTitle from title screen (viewed Apr. 20, 2009). 300 $aIncludes index. 608 $aBibliographies.$2lcgft 700 $aWeld$b Betsy A$01388375 701 $aGriffin$b Margaret S$01388376 701 $aBrett$b George W$01388377 712 02$aGeological Survey (U.S.) 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910698741203321 996 $aReports and maps of the Geological Survey released only in the open files, 1963$93509320 997 $aUNINA