1.
The Pyrgic Puzzler: Classic Conundrums
by Maslanka, Christopher, Harr...
ISBN: 9780486484532
List Price: $9.95
5.
Neurobics : Create Your Own Brain Training Program
by Owen, David, Maslanka, Chri...
ISBN: 9781606521205
7.
University of the Mind: Fiendishly Formidable Number Conundrums
by Christopher Maslanka
ISBN: 9781908643148
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Professor Pinkerton Puzzles - Christopher Maslanka - Paperback
by Maslanka, Christopher
ISBN: 9780671677428
List Price: $4.95
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Professor Percival Pinkerton's Most Perplexing Puzzles
by Maslanka, Christopher
ISBN: 9780881661552
List Price: $4.95