00545cac a2200217ua 4500001000500000005001700005007000300022008004100025020002600066040000900092041001400101082001300115100002700128245004900155260004500204300001900249365001200268504000900280541002400289650001400313177220180503180139.0ta060926s1993           g     b000 u eng u  a0521 43678 8c$ 17.95  aMAIN1 aenghNULL14a330bBla1 aBlaug, Mark  .eAuthor10aThe Methodology of Economics / cMark Blaug.  aLondon :bCambridge Univ.Press , c1993.  aNULL ; cNULL.  a$ 17.95  aNULL  e18685     h$ 17.95 0aEconomics