LEADER 01699oam 2200469 450 001 9910711367903321 005 20180904073649.0 035 $a(CKB)5470000002482351 035 $a(OCoLC)953289973 035 $a(OCoLC)995470000002482351 035 $a(EXLCZ)995470000002482351 100 $a20160708e19671960 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aEcological systems and the water resource /$fby Luna B. Leopold 210 1$aWashington :$cUnited States Department of the Interior, Geological Survey,$d1960. 210 3$aWashington :$cUnited States Department of the Interior, Geological Survey,$d1967. 215 $a1 online resource (pages 21-26) 225 1 $aGeological Survey Circular ;$v414-D 300 $aPart D of: Conservation and water management. 300 $a"Presented before the Sixth Biennial Wilderness Conference, sponsored by California Academy of Science, San Francisco, Calif, March 20-21, 1959." 606 $aWater resources development 606 $aConservation of natural resources 606 $aWater resources development$2fast 615 0$aWater resources development. 615 0$aConservation of natural resources. 615 7$aWater resources development. 700 $aLeopold$b Luna B$g(Luna Bergere),$f1915-2006,$01392408 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bOCLCA 801 2$bGPO 906 $aBOOK 912 $a9910711367903321 996 $aEcological systems and the water resource$93515488 997 $aUNINA