Columbia subject headings:
Language and languages--Variation--Congresses.
Speech--Congresses.
Stevens, Kenneth N., 1924-
Harvard subject headings:
Language and languages--Variation--Congresses
Speech--Congresses
Stevens, Kenneth N., 1924-
Princeton subject headings:
Language and languages--Variation--Congresses.
Speech--Congresses.
Stevens, Kenneth N., 1924-