Keene, G B  <br/><br/>
Abstract Sets and Finite Ordinals: An Introduction to the Study of Set Theory 

 - New York  Dover Publications,Inc.  2007 
 - 106p 
<br/><br/><label>ISBN: </label>9780486462493  0.00 
<br/><br/><label>Dewey Class. No.: </label>511.322