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200 1 $aenvironment natural systems and development$ean economic valutation guide$fMaynard M. Hufschmidt...[et al]
210   $aBaltimore$cThe John Hopkins University Press$d1983
215   $a338$cgraf.$d23 cm.
606   $aPolitica ambientale$2FI
620   $dBaltimore
676   $a363.705$v21
702  1$aHUFSCHMIDT,$bMaynard M.
712   $aTHE JOHN HOPKINS UNIVERSITY PRESS
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996   $aEnvironment natural systems and development$91127812
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