Quaestiones Medii Aevi Novae, vol. 4, 1999, Peace and War, Instytut Historyczny Uniwersytetu Warszawskiego, Warsaw 1999

I. Articles
1. Philippe Contamine, Penser la guerre et la paix a la fin du XIVe siecle: Honore Bouvet (v. 1345-v. 1410)
2. Zdzislaw Zygulski Jr., Knightly Arms — Plebeian Arms.
3. Irina Moroz, The Idea of Holy War in the Orthodox World (On Russian Chronicles from the Twelfth-Sixteenth Century).
4. Zenon H. Nowak, International Arbitration in the Later Middle Ages.
5. Stanislaw Szczur, La papaute d'Avignon face aux confiits en Europe Centrale au XIVe siecle
6. Leszek Kajzer, Die Burgen als Bestandteil der gesellschaftlichen Landschaft im mittelalterlichen Polen
7. Mateusz Golinski, Rustungen Karls IV. in den Jahren 1362-1363-Stadtischer Aspekt
II. Current Research
8. Szczesny Skibinski, Les effets inattendus des croisades de saint Louis sur 1'histoire de architecture en France et en Europe Centrale (Economic et architecture)
9. Jan Frolik, Prague Castle in the Early and High Middle Ages in the Light of Archaeology
10. Wojciech Chudziak, The Early Romanesque Building from Kaldus, Voivodeship of Torun — Chronology and Function
III. In Memoriam
Aleksander Gieysztor 16 July 1916-9 February 1998.
IV. Book Notices