00305nam a2200133Ia 4500008004100000100001600041245003500057250000900092260001400101260002200115260000900137300000900146650001600155221231s9999    xx            000 0 und d  aGrewal,B.S. 0aHigher engineering mathematics  a40th  aNew Delhi  bKhanna Publishers  c2010  a1391  aMathematics