Davis, Harold T. <br/><br/>
Introduction to non-linear Differential and Integral equations  
Davis, Harold T. 
 - New York  Dover  1960 
 - 494  Illustration,index & reference 
<br/><br/><label>ISBN: </label>486609715 
<br/><br/><label>Dewey Class. No.: </label>515  / D2936