Columbia subject headings:
Harvard subject headings:
Civilization, Ancient--Congresses
Environmental archaeology--Congresses.
Excavations (Archaeology)--Congresses
Geography, Ancient--Congresses.
History, Ancient--Congresses
Human beings--Effect of environment on--History--Congresses.
Natural resources--History--Congresses.
Princeton subject headings:
Historical geography--Congresses.
History, Ancient--Congresses.
Natural resources--Congresses.
Natural resources--Rome--Congresses.