Columbia subject headings:
Child slaves--Congresses.
Child slaves--Greece--Congresses.
Child slaves--Rome--Congresses.
Harvard subject headings:
Child labor--Congresses.
Child labor--Greece--Congresses.
Child labor--Rome--Congresses.
Child slaves--Congresses.
Child slaves--Greece--Congresses.
Child slaves--Rome--Congresses.
Slavery--Congresses.
Slavery--Greece--Congresses.
Slavery--Rome--Congresses.
Princeton subject headings:
Child slaves--Congresses.
Child slaves--Greece--Congresses.
Child slaves--Rome--Congresses.