Leighton, Walter  <br/><br/>
Ordinary differential equations 
Walter Leighton 
 - London  Longmans  1964 
 - viii+264p.  illus; index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential Equations,linearMathematicsOscillation Theory
<br/><br/><label>Universal Decimal Class. No.: </label>517.91  / LEI