| Astronomia Popularna |
| - popular astronomy pages prepared by the UAM Astronomic Observatory, Poznan. |
| Oceanography Department at Gdansk Maritime Institute |
| - Gdansk. Research vessel, research and survey equipment, metabase, present and finished projects. |
| contacts. |
| Polish American Collection at IHRC |
| - Immigration History Research Center stores over 4,000 monographs written by, for, and about |
| Polish immigrants as well as numerous periodicals. |
| Polish American Resources |
| - lists studies on Polish Americans. |
| Wielkopolski Osrodek Ksztalcenia i Studiow Samorzadowych |
| - center for the training of local government. |