Jacek Konieczny
Jacek Konieczny has written at least 8 books. Their most popular book is Dlaczego śpimy. Odkrywanie potęgi snu i marzeń sennych with 4 saves with an average rating of 5⭐.
Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.
Series
3 primary booksAuthored 0% of series
Sheets
Sheets is a 3-book series with 3 released primary works first released in 2018 with contributions by Brenna Thummler.
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