Dennis Elliott Shasha (born August 15, 1955), American author, computer scientist | World Biographical Encyclopedia
The Puzzling Adventures of Dr. Ecco (Dover Recreational Math): Shasha, Dennis: 9780486296159: Amazon.com: Books
The Puzzling Adventures of Dr. Ecco book by Dennis E. Shasha
The Puzzling Adventures of Dr. Ecco by Dennis E. Shasha
Codes, Puzzles and Conspiracy : Dennis Shasha : 9780716723141
Paperback Detectives
The Puzzling Adventures of Dr.Ecco : Dennis Shasha : 9780486296159
The Puzzling Adventures of Dr.Ecco : Dennis Shasha : 9780486296159
PUZZLING ADVENTURES OF DR. ECCO By Dennis Shasha **Mint Condition** 9780716719786 | eBay
The Puzzling Adventures of Dr. Ecco by Dennis E. Shasha
The Puzzling Adventures of Dr.Ecco : Dennis Shasha : 9780486296159
Puzzles & Mazes
Paperback Detectives
The Puzzling Adventures of Dr. Ecco book by Dennis E. Shasha
Paperback Detectives
The Puzzling Adventures of Dr. Ecco by Dennis E. Shasha
Codes, Puzzles, And Conspiracy - Dennis Shasha
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Doctor Ecco's Cyberpuzzles: 36 Puzzles for Hackers and Other Mathematical Detectives, Used [Paperback] - Walmart.com
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Dennis Elliott Shasha (born August 15, 1955), American author, computer scientist | World Biographical Encyclopedia
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Paperback Detectives
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