by: Norman D. Willis
$1.00
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Seller Description
Unmarked inside, just some wear on edges from age. 83 pg with puzzles, solutions in the back. Tbh i dont remember anything about it.
Overview
Become a better problem solver, and find solutions in situations that confuse most people. Try all six kinds: Hypotheses, Who Did It? Puzzles, Letters for Digits, Standards of Veracity, Arrangement in...
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