00321    a2200121   4500082001500000100003700015245002500052260004500077300001600122650002200138650001600160650002300176  a519.4bOPE  aThe Open University of Sri Lanka  aNumerical methods II  aNawalabThe Open University of Sri Lanka  a130p.c28cm  aNUMERICAL METHODS  aMATHEMATICS  aNUMERICAL ANALYSIS