| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Czarne koty i prima aprilis | 978-83-08-04602-9 (83-08-04602-9) | 2011 |
| Kocie furtki i pulapki na myszy | 978-83-08-04710-1 (83-08-04710-6) | 2011 |
Harry Oliver · Oliver Harry Gerson · Oliver Harry Heintzelman · Oliver Heer · Oliver Heyer · Oliver Hoare · Olivier Hari