Columbia subject headings:
Martial--Indexes.
Slavery in literature--Indexes.
Slavery--Rome--History--Indexes.
Working class in literature--Indexes.
Working class--Rome--History--Indexes.
Harvard subject headings:
Martial--Indexes.
Slavery in literature--Indexes.
Slavery--Rome--History--Indexes.
Working class in literature--Indexes.
Working class--Rome--History--Indexes.
Princeton subject headings:
Labor--Rome--History--Indexes.
Martial--Dictionaries, indexes, etc.
Slavery in literature--Indexes.
Slavery--Rome--History--Indexes.
Working class in literature--Indexes.