Columbia subject headings:
Italy--Social conditions--Congresses.
Marginality, Social--Italy--Congresses.
Marginality, Social--Spain--Congresses.
Spain--Social conditions--Congresses.
Harvard subject headings:
Marginality, Social--Italy--History--Congresses.
Marginality, Social--Spain--History--Congresses.
Social integration--Congresses.
Princeton subject headings:
Marginality, Social--Italy--History--Congresses.
Marginality, Social--Spain--History--Congresses.
Social integration--Congresses.