Ofonagoro, W. Ibekwe Trade and imperialism in Southern Nigeria 1881-1929 - New York : NOK Publishers International, 1979 - xii, 429p. : ill. ; 23cm. Includes bibliographies ISBN: 0883570491 Subjects--Topical Terms: NigeriaEconomic conditions to 1960 LC Class. No.: DT515.O36