00342nam a2200133 a 450000500170000000800410001704100080005808200080006610000200007424500520009426400340014630000110018070000170019120260717091130.0260717s1971    ii            000 0 eng d  aeng04a3301 aMarshall, H. A.10aEconomic analysis a workbook /cMarshall, H. A. 1aLondon :bButterworth,c1971.  a217 p.1 aMould, J. R.