Columbia subject headings:
Bosporus (Turkey)--Description and travel.
Kabasakal, Hakan, 1970-
Underwater exploration--Turkey--Bosporus.
Underwater exploration--Turkey--Istanbul.
Harvard subject headings:
Bosporus (Turkey)--Description and travel.
Kabasakal, Hakan, 1970-
Underwater exploration--Turkey--Bosporus.
Underwater exploration--Turkey--Istanbul.
Princeton subject headings:
Bosporus (Turkey)--Description and travel.
Kabasakal, Hakan, 1970-
Underwater exploration--Turkey--Bosporus.
Underwater exploration--Turkey--Istanbul.