Columbia subject headings:
Caucasian languages--Congresses.
Caucasian languages--Morphology--Congresses.
Caucasian languages--Verb--Congresses.
Harvard subject headings:
Caucasian languages--Congresses.
Caucasian languages--Morphology--Congresses.
Caucasian languages--Verb--Congresses.
Caucasian languages--Word formation--Congresses.
Princeton subject headings:
Caucasian languages--Verb--Congresses.
Caucasian languages--Word formation--Congresses.