Columbia subject headings:
Harvard subject headings:
Communication--Congresses
Cultural relations--Congresses.
Language and languages--Congresses
Nonverbal communication--Social aspects--Congresses.
Oral communication--Congresses
Princeton subject headings:
Communication--Congresses.
Cultural relations--Congresses.
Language and languages--Congresses.
Nonverbal communication--Social aspects--Congresses.
Oral communication--Congresses.