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Detective Shadow
D S
title
ISBN-13
(ISBN-10)
year of publication
Lateral Mindtrap Puzzles: Challenge the Way You Think & See
978-0-8069-7135-3
(0-8069-7135-5)
2000
Tricky Mindtrap Puzzles: Challenge the Way You Think & See
978-0-8069-4488-3
(0-8069-4488-9)
2000
Detief Singer