00288nam 2202791 45000010005000000030023000050050009000280080041000370820012000781000029000902600000001192450049001192791StarLibrary Marc Built20180417201711 ||||| |||||||||||amh  a423.159 aJohn P.Judd and Scadding aJOURNAL OF ECONMMIC LITERATURE December 1981