Columbia subject headings:
Harvard subject headings:
Pais, Sidónio, 1872-1918--Exhibitions.
Portugal--Politics and government--20th century--Exhibitions.
Presidents--Portugal--Biography--Exhibitions.
Princeton subject headings:
Pais, Sidónio, 1872-1918--Exhibitions.
Portugal--Politics and government--20th century--Exhibitions.
Presidents--Portugal--Biography--Exhibitions.