John Verdon
John Verdon has written at least 22 books. Their most popular book is Think of a Number with 67 saves with an average rating of 3.35⭐.
Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.
Series
8 primary booksAuthored 100% of series
Dave Gurney
Dave Gurney is a 8-book series with 8 released primary works first released in 2010 with contributions by John Verdon.
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