TY  - CHAP
A1  - Kopytoff, I.
T1  - The internal African frontier: the making of African political culture
Y1  - 1987
A3  - Kopytoff, I.
T2  - The African Frontier: the Reproduction of Traditional African Societies
CY  - Bloomington
PB  - Indiana University Press
SP  - 3
EP  - -84

ER  -