00284nam 2202804 45000010005000000030023000050050009000280080041000370820012000781000029000902600000001192450045001192804StarLibrary Marc Built20180417201711 ||||| |||||||||||amh  a423.172 aJohn P.Judd and Scadding aJOURNAL OF ECONMMIC LITERATURE June 1993