Shasha, Dennis <br/><br/>
Codes puzzels and conspiracy 

 - NEWYORK  W. H. FREEMAN  1992 
 - 241P 
<br/><br/><label>ISBN: </label>0-7176-2314-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATHEMATICAL RECREATIONS
<br/><br/><label>Dewey Class. No.: </label>793.74 SHA'C