Forsyth, Andrew Russell,  1858-1942. <br/><br/>
A treatise on differential equations / 
A.R. Forsyth. 
 - 6th ed. 
 - Mineola, N.Y. :  Dover Publications,  1956. 
 - xviii, 583 p. ;  21 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.
<br/><br/><label>Dewey Class. No.: </label>515.35  / FOT 1956