Krupa Michal · M. K. · Michael Krupa · Michal Stefan Krupa
| title | ISBN-13 | year of publication |
|---|---|---|
| Czesc, mam na imie Michal | 978-83-7942-000-1 | 2013 |
| Janek herbu pol krowy | 978-83-7900-461-4 | 2015 |
| Losos a la Africa | 978-83-7900-284-9 | 2014 |
| Losos norwesko-chinski | 978-83-7900-174-3 | 2014 |
| Maslana Czas pokoju | 978-83-7900-326-6 | 2015 |