Columbia subject headings:
Harvard subject headings:
Petrus, de Dusburg, active 1326. Chronicon terrae Prussiae
Prussia, East (Poland and Russia)--History--Sources.
Prussia, West (Poland)--History--Sources.
Teutonic Knights--History--Sources.
Princeton subject headings:
Petrus, de Dusburg, active 1326. Chronicon terrae Prussiae.