Columbia subject headings:
Commerce--Congresses.
Intercultural communication--Congresses.
Language and languages--Study and teaching--Congresses.
Language and languages--Vocational guidance--Congresses.
Harvard subject headings:
Commerce--Congresses
Intercultural communication--Congresses.
Language and languages--Study and teaching--Congresses
Language and languages--Vocational guidance--Congresses.
Princeton subject headings:
Commerce--Congresses.
Intercultural communication--Congresses.
Language and languages--Study and teaching--Congresses.
Language and languages--Vocational guidance--Congresses.