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200 1 $a<<The >>EFFECTIVENESS of international environmental agreements$ea survey of existing legal instruments$fedited byPeter H. Sand.
210   $aCambridge$cGrotius Publ.$d1992.
215   $a540 p. 30 cm
300   $aIn testa al front.: The United Nations conference on environmen and development.
610 0 $aAmbiente naturale - Tutela internazionale
676   $a341.762
702  1$aSand,$bPeter H.
801  0$aIT$bUNINA$gRICA$2UNIMARC
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996   $aEFFECTIVENESS of international environmental agreements$9626266
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