FORSYTH A.R. <br/><br/>
Treatise on differential equations. 
FORSYTH A.R. 
 - London  MacMillan & CO. Ltd.         1948 
 - xviii,583p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B33, F9/SC