Series and approximation. 

 - Providence, RI ,  [1968] 
 - Its translations. Ser. 1 ;  v. 3 .
 - American Mathematical Society. Translations. Series 1 ;  American Mathematical Society. Translations. Series 1 ;  American Mathematical Society. Translations. Series 1 ;  v. 3. .
<br/><br/> First published in 1954. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Series.<br/>Series and approximation.