Columbia subject headings:
Historiography--Spain.
History--Methodology.
Sociology--Spain.
Harvard subject headings:
History--Methodology
Sociology--Spain.
Spain--Historiography.
Princeton subject headings:
Social participation--Spain--Historiography--Congresses.
Social participation--Spain--History--19th century--Congresses.
Social participation--Spain--History--20th century--Congresses.
Spain--Social conditions--1886-1939--Congresses.