Columbia subject headings:
Byzantine Empire--Commerce.
Byzantine Empire--Economic conditions.
Byzantine Empire--History--1081-1453.
Crusades--Fourth, 1202-1204--History.
Excavations (Archaeology)--Greece--Peloponnēsos.
Mediterranean Region--Civilization.
Peloponnesus (Greece : Peninsula)--Antiquities.
Harvard subject headings:
Byzantine Empire--Commerce.
Byzantine Empire--Economic conditions.
Byzantine Empire--History--1081-1453
Crusades--Fourth, 1202-1204--History.
Excavations (Archaeology)--Greece--Peloponnēsos.
Mediterranean Region--Civilization
Peloponnesus (Greece : Peninsula)--Antiquities.
Princeton subject headings:
Byzantine Empire--Commerce.
Byzantine Empire--Economic conditions.
Byzantine Empire--History--1081-1453.
Crusades--Fourth, 1202-1204--History.
Excavations (Archaeology)--Greece--Peloponnēsos.
Mediterranean Region--Civilization.
Peloponnesus (Greece : Peninsula)--Antiquities.