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Time, space, and the unknown : Maasai configurations of power and providence
Spencer, Paul, (2003)
Age class systems : social institutions and polities based on age
Bernardi, Bernardo, (1985)
From the Pleistocene to the Holocene : human organization and cultural transformations in prehistoric North America
Bousman, C. Britt, (2012)
The Samburu : a study of gerontocracy
Spencer, Paul, (2004)
Nomads in alliance : symbiosis and growth among the Rendfile and Samburu of Kenya
Spencer, Paul, (1973)