00318nam a2200133Ia 4500008004000000041000800040082001000048100001600058245002600074260004300100300001100143650001500154650001500169210210b1962   xxu||||| |||| 00| 0 eng d  aeng  a387/2  aALLEN (H V)  aCommercial arithmetic  aLondonbLongman Green & Co Ltd.,c1962  aix,446  aCommercial  aarithmetic