Martin L. Keen
Martin L. Keen has written at least 7 books. Their most popular book is Elektronik with 1 save with an average rating of 5⭐.
Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.
Series
2 primary booksAuthored 50% of series
Was ist was
Was ist was is a 2-book series with 2 released primary works first released in 1981 with contributions by Paul E. Blackwood, Martin L. Keen, and Heinz Bahr.
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