Columbia subject headings:
Christianity--20th century.
Church and the world.
Harvard subject headings:
Christian sociology--Catholic Church
Human rights--Religious aspects--Catholic Church
Multiculturalism--Religious aspects--Catholic Church
War--Relief of sick and wounded
War--Religious aspects--Catholic Church
Princeton subject headings:
Christian sociology--Catholic Church.
Human rights--Religious aspects--Catholic Church.
Multiculturalism--Religious aspects--Catholic Church.
War--Relief of sick and wounded.
War--Religious aspects--Catholic Church.