John Campbell
John Campbell has written at least 14 books. Their most popular book is Third Millennium Thinking with 5 saves with an average rating of 4⭐.
Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.
Series
7 primary booksAuthored 14% of series
Omega Days
Omega Days is a 7-book series with 7 released primary works first released in 2014 with contributions by John L. Campbell, Campbell, John L. (Investigator), and John Campbell.
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