Shasha, Dennis Elliott <br/><br/>
The puzzling adventures of Dr. Ecco / 
 Puzzing adventures of Doctor Ecco  Dr. Ecco 
Dennis Shasha 
 - Mineola, N.Y. :  Dover Publications,  1998 
 - x, 181 p. :  ill. ;  22 cm. 
<br/><br/> 'Corrected and revised republication of the work first published by W.H. Freeman and Company, New York, in 1988'--T.p. verso 
<br/><br/><label>ISBN: </label>0486296156 (pbk.)  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical recreations