01075nam a22002531i 450099100200433970753620040116113716.0040407s1998 it |||||||||||||||||eng b12856253-39ule_instARCHE-083587ExLDip.to Scienze StoricheitaA.t.i. Arché s.c.r.l. Pandora Sicilia s.r.l.574.5Segerson, Kathleen253400Voluntary vs. mandatory approaches to nonpoint pollution control :complements or substitutes? /Kathleen SegersonMilano :Fondazione ENI Enrico Mattei,19981 v. ;21 cmNote di lavoro della Fondazione ENI Enrico Mattei ;92.98Inquinamento.b1285625302-04-1416-04-04991002004339707536LE009 GEOG.COLL.14E/9212009000309463le009-E0.00-l- 00000.i1341607816-04-04Voluntary vs. mandatory approaches to nonpoint pollution control302086UNISALENTOle00916-04-04ma -engit 01