Bellman, Richard <br/><br/>
Modern elementry differential equations 
by Richard Bellman and Kenneth H. Cooke 
 - 2nd ed. 
 - Massachusetts  Addison-Wesley  1971[reprinted 1978] 
 - xii,228p.; 24cm.- 
 - Addison Wesley series in Mathematics .
<br/><br/><label>Dewey Class. No.: </label>515.35  / BEL