00286nam 2202806 45000010005000000030023000050050009000280080041000370820012000781000029000902600000001192450047001192806StarLibrary Marc Built20180417201711 ||||| |||||||||||amh  a423.174 aJohn P.Judd and Scadding aJOURNAL OF ECONMMIC LITERATURE Marchr 1993