00330nam a2200121Ia 4500008004100000082002000041100002300061245004100084250000800125260003200133300001500165700002800180260825b        |||||||| |||| 00| 0 eng d  a515.35bR159.ED  aRainville, Earl D.  aElementary differential equationsb/  a4th  aNew York:bMacmillan,c1969  axiv, 466p.  aBedient, P. E.eauthor.