LEADER 01685nam 2200493 450 001 9910458596103321 005 20200520144314.0 010 $a0-585-04391-4 010 $a0-8229-7203-4 035 $a(CKB)2550000001330429 035 $a(MiAaPQ)EBC2038102 035 $a(Au-PeEL)EBL2038102 035 $a(CaPaEBR)ebr10905437 035 $a(CaONFJC)MIL627572 035 $a(OCoLC)891395305 035 $a(EXLCZ)992550000001330429 100 $a19981209e19991959 uy| 0 101 0 $aeng 135 $aurcnu|||||||| 181 $2rdacontent 182 $2rdamedia 183 $2rdacarrier 200 10$aConservation and the gospel of efficiency $ethe progressive conservation movement, 1890-1920 /$fSamuel P. Hays 210 1$aPittsburgh, Pennsylvania :$cUniversity of Pittsburgh Press,$d1999. 210 4$dİ1959 215 $a1 online resource (320 pages) 300 $aOriginally published: Cambridge : Harvard University Press, 1959, in series: Harvard historical monographs, 40. 311 $a0-8229-5702-7 311 $a1-306-96321-4 320 $aIncludes bibliographical references (pages 277-282) and index. 606 $aConservation of natural resources$zUnited States$xHistory 606 $aEnvironmental policy$zUnited States$xHistory 608 $aElectronic books. 615 0$aConservation of natural resources$xHistory. 615 0$aEnvironmental policy$xHistory. 676 $a333.7/2/0973 700 $aHays$b Samuel P.$0102888 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910458596103321 996 $aConservation and the gospel of efficiency$936107 997 $aUNINA