Shasha, Dennis Elliott <br/><br/>
Dr. Ecco, mathematical detective 
Dennis Shasha 
 - Mineola, NY  Dover Publications  2004 
 - ix, 241 p. : ill. ; 22 cm 
<br/><br/> Originally published: Codes, puzzles, and conspiracy. New York : W.H. Freeman, c1992 
<br/><br/><label>ISBN: </label>9780486435527 
<br/><br/><label>ISSN: </label>2004045547 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical recreations
<br/><br/><label>Dewey Class. No.: </label>793.74 SHA