LEADER 01458oam 2200421 450 001 9910717098803321 005 20220103110932.0 035 $a(CKB)5470000002527213 035 $a(OCoLC)1287099851 035 $a(EXLCZ)995470000002527213 100 $a20211203d1973 ua 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aData requirements for modeling a ground-water system in an arid region /$fby Fred Kunkel 210 1$aMenlo Park, Calif. :$cU.S. Geological Survey,$d1973. 215 $a1 online resource (iii, 21 pages) $cillustrations, maps 225 1 $aWater-resources investigations ;$v4-73 300 $a"March 1973." 320 $aIncludes bibliographical references (page 21). 606 $aHydrogeological modeling$zUnited States 606 $aGroundwater$zUnited States$xMathematical models 606 $aArid regions$zUnited States 615 0$aHydrogeological modeling 615 0$aGroundwater$xMathematical models. 615 0$aArid regions 700 $aKunkel$b Fred$f1918-$01397372 712 02$aGeological Survey (U.S.), 712 02$aGeological Survey (U.S.).$bWater Resources Division. 801 0$bGPO 801 1$bGPO 801 2$bGPO 906 $aBOOK 912 $a9910717098803321 996 $aData requirements for modeling a ground-water system in an arid region$93525438 997 $aUNINA