TY - GEN AU - Alpers,Edward A. TI - Ivory and Slaves in East Central Africa: changing patterns of international trade to the later nineteenth century SN - 043532005X (cased) U1 - 380.144 22 PY - 1975/// CY - London PB - Heinmann Educational books Ltd. KW - East Africa KW - Economic history KW - Ivory and slave trade N1 - Includes bibliographical references (p. 269-286) and index ER -