Columbia subject headings:
Harvard subject headings:
Black market--Spain--History--18th century.
Contraband of war--Spain--History--18th century.
Smuggling--Spain--History--18th century.
Spain--Politics and government--18th century.
Princeton subject headings:
Black market--Spain--History--18th century.
Contraband of war--Spain--History--18th century.
Smuggling--Spain--History--18th century.
Spain--Commerce--History--18th century.
Spain--Politics and government--1788-1808.