Alpers, Edward A., 1941- Ivory and slaves in East Central Africa : changing patterns of international trade to the later nineteenth century / Edward A. Alpers

Ivory and slaves in East Central Africa : changing patterns of international trade to the later nineteenth century / Edward A. Alpers . - 1st ed . - xxa London xxa-fimyyc Heinemann yyc-fim, 1975 . - xviii, 296 p. : il., 7 mapas, 6 tabelas 22 cm
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