00273    a2200109   4500020001500000082001700015100002100032245003000053260003700083300002300120650002000143  a0631147896  a338.542bLUC  aLucas, Robert E.  aModels of business cycles  aCambridgebBlackwellc1987g1987  a[iv], 115p.c21cm.  aBusiness cycles