Columbia subject headings:
Peirce, Charles S. (Charles Sanders), 1839-1914.
Semiotics--History--20th century.
Semiotics.
Harvard subject headings:
Peirce, Charles S. (Charles Sanders), 1839-1914--Contributions in semiotics.
Semiotics--History--20th century.
Princeton subject headings:
Peirce, Charles S. (Charles Sanders), 1839-1914--Contributions in semiotics.
Semiotics--History--20th century.