Ferrar, William Leonard  1893 <br/><br/>
A text-book of convergence 

 - Oxford :   Clarendon,   1963. 
 - vi, 192 p. :   gráfs. ;   22 cm. 
<br/><br/> Apéndice, p. 176-190 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CONVERGENCIA
<br/><br/><label>Universal Decimal Class. No.: </label>519.25