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100   $a20110912d1997      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aGeneral distribution of geologic materials in the San Francisco Bay Region, California, a digital map database$b[electronic resource] $ebased on the work of E.E. Brabb (1980), S.E. Ellen and C.M. Wentworth (1995), and E.J. Helley and K.R. Lajoie (1979) /$fdigitally compiled by Carl M. Wentworth
210  1$a[Menlo Park, Calif.] :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d1997.
215   $a1 online (26 pages) $cmap
225 1 $aOpen-file report ;$v97-744
300   $aTitle from title screen (viewed on Sept. 12, 2011).
320   $aIncludes bibliographical references (pages 17-18).
517   $aGeneral distribution of geologic materials in the San Francisco Bay Region, California, a digital map database 
606   $aGeological mapping$zCalifornia$zSan Francisco Bay Area$vDatabases
606   $aGeology$zCalifornia$zSan Francisco Bay Area$vDatabases
606   $aDigital mapping$vDatabases
615  0$aGeological mapping
615  0$aGeology
615  0$aDigital mapping
700   $aWentworth$b Carl M$01393425
712 02$aGeological Survey (U.S.)
801  0$bGPO
801  1$bGPO
801  2$bGPO
906   $aBOOK
912   $a9910700953603321
996   $aGeneral distribution of geologic materials in the San Francisco Bay Region, California, a digital map database$93510758
997   $aUNINA