Columbia subject headings:
Baudouin de Courtenay, Jan Niecisław, 1845-1929.
Linguistics.
Polish language.
Harvard subject headings:
Baudouin de Courtenay, Jan Niecisław, 1845-1929.
Linguistics
Polish language.
Princeton subject headings:
Baudouin de Courtenay, Jan Niecisław, 1845-1929.
Linguistics.
Polish language.