Ferrar, William Leonard  1893- <br/><br/>
A text-book of convergence / 
by W. L. Ferrar. 
 - Oxford :  The Clarendon Press ,  1938. 
 - vi , 2 l., [3]-192 p. :  ill. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Convergence.<br/>Series, Infinite.
<br/><br/><label>Dewey Class. No.: </label>517.21