Columbia subject headings:
Harvard subject headings:
Destutt de Tracy, Antoine Louis Claude, comte, 1754-1836. Élémens d'idéologie.
Ideology--Spain--History--19th century.
Language and logic--History--19th century.
Logic--Spain--History--19th century.
Spanish language--History--19th century.
Princeton subject headings:
Ideology.
Language and logic.
Logic.
Spanish language.