Columbia subject headings:
Amber--Baltic States.
Baltic States--Antiquities.
Classical antiquities.
Rome--History--Nero, 54-68.
Harvard subject headings:
Amber--Baltic States.
Baltic States--Antiquities.
Classical antiquities.
Rome--History--Nero, 54-68.
Princeton subject headings:
Amber--Baltic Sea Region.
Baltic Sea Region--Commerce--Rome--History.
Baltic Sea region--Discovery and exploration--Roman.
Pliny, the Elder. Naturalis historia. Book 37.
Rome--Commerce--Baltic Sea Region--History.