Gervase, William The economics of the Indian Ocean Slave Trade in the Nineteenth Century / by William Gervase and Clarence Smith - London: Routledge, 1989 (rep.2018) - vii,222p., illus.,tables.; 23cm. ISBN: 9781138492394 Rs.895/- Subjects--Index Terms: AFRICA - SLAVE TRADE Dewey Class. No.: 382.440976 / GER/E