LEADER 00896cam0 2200253   450 
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100   $a20080630d1959----km-y0itay50------ba
101 0 $aeng
102   $aUS
105   $ay-------001yy
200 1 $aConservation and the gospel of efficiency$ethe progressive conservation movement, 1890-1920$fSamuel P. Hays
210   $aCambridge (Mass.)$cHarvard university press$dc1959
215   $a297 p.$d20 cm
225 2 $aHarvard historical monographs$v40
410  0$12001$aHarvard historical monographs
500 10$aConservation and the gospel of efficiency$936107
610 1 $aSistemi economici capitalisti
700  1$aHays,$bSamuel P.$0102888
801  0$aIT$bUNIPARTHENOPE$c20080630$gRICA$2UNIMARC
912   $a000013794
951   $a051/64$b4219$cNAVA2$d2008
996   $aConservation and the gospel of efficiency$936107
997   $aUNIPARTHENOPE