Columbia subject headings:
Harvard subject headings:
Amharic language--Grammar--Congresses.
Horn of Africa--Languages--Congresses.
Linguistic analysis (Linguistics)--Congresses.
Semitic languages--Figures of speech--Congresses.
Semitic languages--Grammar--Congresses.
Semitic languages--Tense--Congresses.
Semitic languages--Verb--Congresses.
Space and time in language--Congresses.
Princeton subject headings:
Ethiopia--Languages--Tense--Congresses.
Ethiopia--Languages--Verb--Congresses.
Horn of Africa--Languages--Tense--Congresses.
Horn of Africa--Languages--Verb--Congresses.
Space and time in language--Congresses.