Simmons, George Finlay <br/><br/>
Differential equations, with applications and historical notes / 
Simmons, George Finlay 
 - 2nd ed. 
 - xxi, 629 p. ; 24 cm. 
<br/><br/><label>ISBN: </label>0070575401 
<br/><br/><label>Dewey Class. No.: </label>515.35