Columbia subject headings:
Catholic Church--Doctrines.
Church and social problems--Catholic Church.
Collective bargaining--United States.
Industrial sociology--United States.
Labor--Religious aspects--Christianity--United States.
Harvard subject headings:
Catholic Church--Doctrines.
Church and social problems--Catholic Church
Collective bargaining--United States.
Industrial sociology--United States.
Labor--Religious aspects--Christianity--United States.
Labor--United States--Religious aspects--Christianity.
Princeton subject headings:
Catholic Church--Doctrines.
Church and social problems--Catholic Church.
Collective bargaining--United States.
Industrial sociology--United States.
Labor--Religious aspects--Christianity--United States.