| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| 100 Samurai Sudoku Puzzles 2 | 978-0-9551413-4-8 | 2006 | ||
| 100 Samurai Sudoku Puzzles | 978-0-9551413-3-1 | 2005 | ||
| 200 Difficult Sudoku Puzzles | 978-0-9551413-1-7 | 2005 | ||
| 200 Difficult Sudoku Puzzles | 978-1-4116-3742-9 | 2005 | ||
| Central Italy Travel Planner and Guide | 978-1-872576-88-6 | 1999 | Fiona Duncan | |
| Knaurs Reiseführer Mittelitalien | 978-3-426-26866-7 | 1996 | " | |
| Knaurs Stadtführer, Rom | 978-3-426-26841-4 | 1995 | Richard Dixon | |
| Le Marche: an insider's guide | 978-1-4477-8199-8 | 2013 | ||
| Mike Butterfield's Guide to the Mountains of New Mexico | 978-0-937206-88-1 | 2006 | ||
| Venangoland People | 978-1-4774-1354-8 | 2012 | ||
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