Poligraf · Warszawska Firma Wydawnicza
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Naukowe wrota do zaswiatow | 978-83-7805-729-1 (83-7805-729-1) | 2013 |
| Prawda duszy | 978-83-88330-68-1 (83-88330-68-3) |
Kindergarten Through Eighth Grade Committee on Science Learning