Gardner, Martin <br/><br/>
Mathematical carnival 

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 - London  Penguin Books  1975 
 - x,274p.   
<br/><br/>   
<br/><br/><label>ISBN: </label>0-14-013507-3 
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>Mathematics  Number theory  Set theory  Group theory  Mathematical recreations  Number games 
<br/><br/><label>Dewey Class. No.: </label>51-8