00290nam a2200133Ia 4500008004100000020001800041082000800059082001000067100001500077245002300092260001000115260002200125260000900147230118s9999||||xx |||||||||||||| ||und||  a81-220-0124-6  a650  bGUP/N  ab.dbgupta 0anumerical analysis  adelhi  bkonark publishers  c1989