Columbia subject headings:
Human rights.
Scholasticism--Spain--History--Congresses.
Slavery.
Harvard subject headings:
Christian ethics--Congresses
Free will and determinism--Congresses
Human rights--History--Congresses.
Law--History--Congresses
Liberty--History--Congresses.
Political science--Philosophy--Congresses
Scholasticism--Spain--Congresses.
Slavery--History--Congresses.
Princeton subject headings:
Human rights.
Scholasticism--Spain--History--Congresses.
Slavery.