Columbia subject headings:
Civilization--History.
Culture diffusion.
Ethnology.
Human beings--Effect of environment on.
Social evolution.
Harvard subject headings:
Civilization--History
Culture diffusion
Ethnology
Human beings--Effect of environment on
Social evolution
Princeton subject headings:
Civilization--History.
Culture diffusion.
Ethnology--Côte d'Ivoire.
Human beings--Effect of environment on.
Social evolution.