Columbia subject headings:
Eastern Sudanic languages--Congresses.
Kordofanian languages--Congresses.
Nuba Mountains (Sudan)--Languages--Congresses.
Nubian languages--Congresses.
Nubian languages--Grammar--Congresses.
Harvard subject headings:
Eastern Sudanic languages--Congresses.
Kordofanian languages--Congresses.
Nuba Mountains (Sudan)--Languages--Congresses.
Nubian languages--Congresses.
Nubian languages--Grammar--Congresses.
Princeton subject headings: