Columbia subject headings:
Somalia--Ethnic relations.
Somalia--History.
Somalia--Politics and government--20th century.
Somalia--Social conditions.
Tribes--Somalia.
Harvard subject headings:
Somalia--Ethnic relations.
Somalia--History
Somalia--Politics and government--20th century.
Somalia--Social conditions
Tribes--Somalia.
Princeton subject headings:
Ethnic groups--Somalia--History.
Somalia--Ethnic relations.
Somalia--History.
Somalia--Politics and government.
Tribes--Somalia--History.