Columbia subject headings:
Linguistics--Research--Czechoslovakia--Congresses.
Pražský linguistický kroužek--Congresses.
Harvard subject headings:
Linguistics--Research--Czechoslovakia--Congresses.
Pražský linguistický kroužek--Congresses.
Princeton subject headings:
Linguistics--Research--Czechoslovakia--Congresses.
Pražský linguistický kroužek--Congresses.