Gardner, Martin,  1914- <br/><br/>
Mathematical puzzles and diversions / 
Martin Gardner 
 - Harmondsworth :  Penguin,  1965 
 - 154 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0140207139 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical recreations