Columbia subject headings:
Bosporus (Turkey)--Congresses.
Dardanelles Strait (Turkey)--Congresses.
Straits--Turkey--Congresses.
Turkey--Environmental conditions--Congresses.
Harvard subject headings:
Princeton subject headings:
Bosporus (Turkey)--Congresses.
Dardanelles Strait (Turkey)--Congresses.
Straits--Turkey--Congresses.
Turkey--Environmental conditions--Congresses.