Columbia subject headings:
Black Sea Coast (Ukraine)--Commerce--History.
Greeks--Ukraine, Southern--History.
Greeks--Ukraine--Black Sea Coast--History.
Ukraine, Southern--Commerce--History.
Harvard subject headings:
Azov, Sea of (Ukraine and Russia)--Commerce--History.
Black Sea Lowland (Ukraine)--Commerce--History.
Greeks--Ukraine--Black Sea Lowland--History.
Princeton subject headings: