00279nam a2200109 a 450000500170000002000150001708200150003210000170004724500480006426000400011230000170015220251203090946.0  a0876920261  a519.4bSAS  aSastry, S.S.  aIntroductory methods of numberical analysis  aDelhibPrentice hall of Indiac1988  ax,200p, 22cm