Title: Klassovai͡a borʹba v Vizantii v 1180-1204 gg. i Chetvertyĭ Krestovyĭ pokhod
Subjects: Crusades, Fourth, 1202-1204, History, Politics and government, Social conflict
Places: Byzantine Empire, Istanbul (Turkey)
Time periods: 1081-1453, Siege, 1203-1204