Columbia subject headings:
Portugal--Civilization--Historiography.
Portugal--Civilization.
Harvard subject headings:
Pessoa, Fernando, 1888-1935
Pombal, Sebastião José de Carvalho e Melo, Marquês de, 1699-1782.
Portugal--Civilization.
Portugal--History.
Silva, Agostinho da, 1906-1994.
Vieira, António, 1608-1697.
Viriathus, -approximately 139 B.C.
Princeton subject headings: