Fonnesberg-Schmidt I.M. The popes and the Baltic crusades, 1147-1254

Brill Academic Publishers, 2007. - 304 p. - (The Northern World 26).The Popes and the Baltic Crusades examines the formulation of papal policy on the crusades and missions in the Baltic region in the central Middle Ages and analyses why and how the crusade concept was extended from the Holy Land to the Baltic region.