Columbia subject headings:
Harvard subject headings:
Catholic Church--Relations--Judaism--Papal documents.
Christianity and antisemitism--Papal documents.
Judaism--Relations--Catholic Church--Papal documents.
Pius XI, Pope, 1857-1939
Princeton subject headings:
Catholic Church--Relations--Judaism.
Catholic Church. Pope (1922-1939 : Pius XI). Humani generis unitas.
Christianity and antisemitism.
Judaism--Relations--Catholic Church.
Pius XI, Pope, 1857-1939--Political and social views.
Race relations--Religious aspects--Catholic Church.