Birkhoff, Garrett <br/><br/>
Ordinary differential equations 

 - 3d ed 
 - New York  John Wiley  1978 
 - xi,342p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATHEMATICS
<br/><br/><label>Dewey Class. No.: </label>515.35  / BIR