Columbia subject headings:
Church and social problems--Catholic Church--History--20th century--Congresses.
Church and social problems--Italy--Trentino-Alto Adige--History--20th century--Congresses.
Trentino-Alto Adige (Italy)--Economic conditions--Congresses.
Trentino-Alto Adige (Italy)--Politics and government--Congresses.
Trentino-Alto Adige (Italy)--Social conditions--Congresses.
Harvard subject headings:
Church and social problems--Catholic Church--History--20th century--Congresses.
Church and social problems--Italy--Trentino-Alto Adige--History--20th century--Congresses.
Trentino-Alto Adige (Italy)--Economic conditions--Congresses.
Trentino-Alto Adige (Italy)--Politics and government--Congresses.
Trentino-Alto Adige (Italy)--Social conditions--Congresses.
Princeton subject headings:
Church and social problems--Catholic Church--History--20th century--Congresses.
Church and social problems--Italy--Trentino-Alto Adige--History--20th century--Congresses.
Trentino-Alto Adige (Italy)--Economic conditions--Congresses.
Trentino-Alto Adige (Italy)--Politics and government--Congresses.
Trentino-Alto Adige (Italy)--Social conditions--Congresses.