00426pab a2200145 454500008004000000100002100040245009700061260000900158300001100167362000800178650001700186650002500203700002100228773003100249180718b1998   xxu||||| |||| 00| 0 eng d  aMitchell, Ronald  aEmpirical research on international environmental policy: designing qualitative case studies  c1998  ap.4-31  aMay  aCase studies  aEnvironmental policy  aBernauer, Thomas  aJournal of Urban Economics