00380nam a2200133 a 4500008004100000020001500041050001400056100002500070245006400095246002500159260004200184300001100226350000900237120416s1992    ||||||||||||||||| ||    u  a052148460x  aHB 21 Eco  aLaffont, Jean-Jaques10aAdvances in economic theorycedited by Jean-Jacques Laffont  aSixth World Congress  aCambridgebThe University Pressc1992  a2 Vol.  a0.00