Columbia subject headings:
Harvard subject headings:
Bert, Paul, 1833-1886--Friends and associates--Congresses.
Bert, Paul, 1833-1886--Political and social views--Congresses.
France--History--Third Republic, 1870-1940--Congresses.
France--Politics and government--1870-1940--Congresses.
Republicanism--France--History--19th century--Congresses.
Princeton subject headings:
France--History--Third Republic, 1870-1940.
France--Politics and government--1870-1940.