00273pam a2200121a 44500008004100000041000800041100001800049245003200067250000600099260002200105300001700127440000700144230405s1990    xxu||||| |||| 00| 0 eng d  aENG  aPeterson W.L.  aPrincipls of Ecomomic Macro  a1  abUniversalc1990  a327 P, 24 CM  a75