Keene, G. B. <br/><br/>
Abstract Sets and Finite Ordinals :   an Introduction to the Study of Set Theory / 
G. B. Keene. 
 - New York :  Pergamon Press,  c 1961. 
 - x, 106 p. ;  ills. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>345  345 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical logic.
<br/><br/><label>Dewey Class. No.: </label>511.3 / K251a