The history of the Jews of Mecklenburg from the forder Grand duchies of Mecklenburg-Schwerin and Mecklenburg-Strelitz and the later state of Mecklenburg.
Open-source web application framework for PHP.
My contribution to the revolutionary open-source idea in software development.
The PHP user group of Halle an der Saale, Germany.
Genealogy and family history of the Gramenz family from the former Lindenwerder (Lipia Góra), district Kolmar, province Posen, West Prussia and other Gramenz families.