00266nam a2200109Ia 4500082001800000100003800018245002200056260002600078300001600104500000500120700003100125  a330.1bK96.ES  aKuhlman, J. M. and Skinner, G. S.  aEconomic systemb  aIllinoisbIrwinc1964  axiii, 522p.  a  aSkinner, G. S. ; jt. auth.