00285nam 2202796 45000010005000000030023000050050009000280080041000370820012000781000029000902600000001192450046001192796StarLibrary Marc Built20180417201711 ||||| |||||||||||amh  a423.164 aJohn P.Judd and Scadding aJOURNAL OF ECONMMIC LITERATURE March 1990