Columbia subject headings:
Frege, Gottlob, 1848-1925.
Semantics (Philosophy)--History--20th century.
Semantics.
Harvard subject headings:
Frege, Gottlob, 1848-1925--Contributions in semantics.
Frege, Gottlob, 1848-1925.
Semantics (Philosophy)--History--20th century.
Princeton subject headings:
Frege, Gottlob, 1848-1925.
Semantics (Philosophy)--History--20th century.