@misc{Kętrzyński_Wojciech_(1838–1918)_Der_1904, author={Kętrzyński, Wojciech (1838–1918)}, copyright={Public Domain}, address={Lemberg}, howpublished={online}, year={1904}, publisher={Gubrynowicz & Schmidt}, language={ger}, title={Der deutsche Orden und Konrad von Masovien 1225-1235 : eine Studie}, URL={http://www.rcin.org.pl/iae/Content/4817/PDF/WA308_612_II685_DEUTSCHE-ORDEN_I.pdf}, keywords={Konrad I of Masovia (Duke of Masovia, High Duke of Poland ; ca. 1187-1247), 13th c.-- Poland, history of Poland, political history of Poland, history of the Teutonic Order, Polish-Teutonic relations, Teutonic Order -- organization, written sources for the history of Poland, written sources for the history of Teutonic Order}, }