Columbia subject headings:
Arrian--Travel--Black Sea Coast.
Arrian. Periplus Ponti Euxini.
Black Sea Coast--Description and travel--Early works to 1800.
Harvard subject headings:
Arrian--Travel--Black Sea Coast.
Arrian. Periplus Ponti Euxini.
Black Sea Coast--Early works to 1800.
Black Sea--Navigation--Early works to 1800.
Princeton subject headings:
Arrian--Travel--Black Sea Coast.
Arrian. Periplus Ponti Euxini.
Black Sea Coast--Early works to 1800.
Black Sea--Navigation--Early works to 1800.