Columbia subject headings:
Categorization (Psychology)
Differentiation (Sociology)
Ethiopia--Boundaries.
Ethiopia--Civilization.
Ethiopia--Ethnic relations.
Ethiopia--Social life and customs.
Group identity--Ethiopia.
Social classes--Ethiopia.
Social groups--Ethiopia.
Social mobility--Ethiopia.
Harvard subject headings:
Categorization (Psychology)
Differentiation (Sociology)
Ethiopia--Boundaries.
Ethiopia--Civilization.
Ethiopia--Ethnic relations.
Group identity--Ethiopia.
Social groups--Ethiopia.
Princeton subject headings:
Categorization (Psychology)
Differentiation (Sociology)
Ethiopia--Boundaries.
Ethiopia--Civilization.
Ethiopia--Ethnic relations.
Ethiopia--Social life and customs.
Group identity--Ethiopia.
Social classes--Ethiopia.
Social groups--Ethiopia.
Social mobility--Ethiopia.