Books listed by ISBN
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MindWare
> Howard Tray
Howard Tray
H.T.
ยท
HIRD THORA
title
ISBN-13
(ISBN-10)
year of publication
MindWare Code Breakers: Level A
978-1-933054-31-5
(1-933054-31-X)
2006
MindWare Code Breakers: Level B
978-1-933054-32-2
(1-933054-32-8)
2006
Howard Trickey