00386nam a22001217a 4500008004100000020001500041082002500056100002200081245004300103260004700146300001700193650005400210140226b        xxu||||| |||| 00| 0 eng d  a971858109X  aFil. 510 C127bc1994  aCalderon, Jose F.  aBasic mathematics 1/cJose F. Calderon  aQuezon City:bGreat Books Trading,cc1994.  axi, 302 p. :  xMathematicsxDecimal systemxRatio and proportion