00291nam a2200109Ia 4500008004100000082001800041100001500059245006200074250000900136260002800145300000800173240913s9999||||xx |||||||||||||| ||und||  a515.35  SID/A  aAH Siddiqi 2aA first course in differential equations with application  aNULL  bMacmillanaMadrasc2009  a512