Columbia subject headings:
Children--Sudan--Social conditions--Congresses.
Sudan--Emigration and immigration--Congresses.
Sudanese--Foreign countries--Social conditions--Congresses.
Harvard subject headings:
Children--Foreign countries--Psychological aspects--Congresses.
Children--Sudan--Social conditions--Congresses.
Sudan--Emigration and immigration--Congresses.
Sudanese--Foreign countries--Social conditions--Congresses.
Princeton subject headings:
Children--Sudan--Social conditions--Congresses.
Refugee children--Sudan--Congresses.