| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Socialist Commonwealth of Nations: Organizations and Institutions | 978-O-3OO-OO521-9 (O-3OO-OO521-O) | 1964 |
Jacek Karol Grzybowski · Kazimierz Grzybowski · Konstanty Grzybowski · Krzysztof Grzybowski · Sawicki Krzysztof Grzybowski Przemyslaw Pawel