30 second challenge : the original brain trainer
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ShareCopied to clipboard30 second challenge : the original brain trainer is a book. It was written by Norman D. Lock and published by John Blake in 2015.
Key facts
- author: Norman D. Lock
- publication date: 2015
- book publisher: John Blake
- book series: unknown
- book subjects: Mathematical recreations, Mental arithmetic
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"30 second challenge : the original brain trainer" is one of the books by Norman D. Lock, books by John Blake and 2,617,384 books in our database.
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