Shasha, Dennis Elliott. <br/><br/>
Codes, puzzles, and conspiracy /  
Dennis Shasha. 
 - New York :  W.H. Freeman,  c1992. 
 - ix, 241 p. :  ill. ;  25 cm. 
<br/><br/>The Coded letter (Page-1), Armada at Mother (Page-9), The Genius of Georgetown (Page-29), Justifying The Means (Page-55), Jungle Killers (Page-71), Double Escape (Page-81), Battle For A Continent (Page-107), Uneasy Peace (Page-123), A Secret Society (Page-143), Concentric Conspiracies (Page-163). 
<br/><br/><label>ISBN: </label>0716722755 : 
<br/><br/><label>LCCN: </label>91024223 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical recreations.
<br/><br/><label>Dewey Class. No.: </label>793.74,SHA