Search for: [Subject = Poland] OR [Subject = Germany] OR [Subject = christianity] OR [Subject = church history] OR [Subject = Middle Ages] OR [Subject = international relations] OR [Subject = Polska] OR [Subject = Niemcy] OR [Subject = chrześcijaństwo] OR [Subject = historia Kościoła] OR [Subject = średniowiecze] OR [Subject = stosunki międzynarodowe] OR [Title = Gniezno i Magdeburg] OR [Creator = Abraham, Władysław \(1860\-1941\)]