Forsyth, A. R. <br/><br/>
A treatise on differential equations / 
A. R. Forsyth. 
 - 6th ed. 
 - London :   Macmillan,  1961. 
 - 21 cm.  xviii, 583 p. ; 
<br/><br/> Includes index. 
<br/><br/>330  330 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.
<br/><br/><label>Dewey Class. No.: </label>512.2 / F775t