Barry R. Clarke

Challenging Logic Puzzles

Barry R. Clarke

$4.79 - $8.02

Brain Busters! Mind-Stretching Puzzles in Math and Logic

Barry R. Clarke

$4.39 - $5.79

Extreme Logic Puzzles

Barry R. Clarke

$7.49 - $8.39

Mathematical Puzzles and Curiosities

Barry R. Clarke

$9.95

Challenging Logic Puzzles

Barry R. Clarke

Out of Stock

The Quantum Puzzle: Critique of Quantum Theory and Electrodynamics: Critique of Quantum Theory and Electrodynamics

Barry R. Clarke

$145.00

Mathematical Conundrums

Barry R. Clarke

$36.32 - $100.00

Test Your Puzzle Power

Barry R. Clarke

$5.49

Puzzles for Pleasure

Barry R. Clarke

$7.69 - $21.98