Columbia subject headings:
Harvard subject headings:
Slavery--Europe--History.
Slavery--Mediterranean Region--History--16th century--Congresses.
Slavery--Mediterranean Region--History--17th century--Congresses.
Slavery--Mediterranean Region--History--18th century--Congresses.
Slavery--Mediterranean Region--History--To 1500--Congresses.
Slavery--Mediterranean Region--History.
Princeton subject headings:
Slavery--Mediterranean Region--History--16th century--Congresses.
Slavery--Mediterranean Region--History--17th century--Congresses.
Slavery--Mediterranean Region--History--18th century--Congresses.
Slavery--Mediterranean Region--History--To 1500--Congresses.