Columbia subject headings:
Arid regions--Study and teaching--Congresses.
Arid regions--Sudan--Congresses.
Jāmiʻat al-Kharṭūm--Congresses.
Land use, Rural--Planning--Study and teaching--Congresses.
Land use, Rural--Sudan--Planning--Congresses.
United Nations University--Congresses.
Harvard subject headings:
Arid regions--Study and teaching--Congresses.
Arid regions--Sudan--Congresses.
Jāmiʻat al-Kharṭūm--Congresses.
Land use, Rural--Planning--Study and teaching--Congresses.
Land use, Rural--Sudan--Planning--Congresses.
United Nations University--Congresses.
Princeton subject headings:
Arid regions--Study and teaching--Congresses.
Arid regions--Sudan--Congresses.
Jāmiʻatal-Kharṭūm--Congresses.
Land use, Rural--Planning--Study and teaching--Congresses.
Land use, Rural--Planning--Sudan--Congresses.
United Nations University--Congresses.