Research John Bernard Klein
| Gramps ID | S0527 |
| Auteur | John Bernard Klein |
Referenties
- https://www.geni.com/people/Mariem-Lenczner/6000000041520631784
- https://www.geni.com/people/Jadwiga-Broniatowska/6000000020503194730
- https://www.geni.com/people/Brandla-Jarzbek-Klajner/6000000003216812179
