International Rubber Study Group The future of natural rubber in Africa : a study of the background and prospects for natural rubber production in Africa to 2000. (Book) - London Secretariat of the International Rubber Study Group 1986 - 125 p. 30 cm. Subjects--Topical Terms: Rubber industry and trade--Africa--Forecasting Universal Decimal Class. No.: 678.4(6) INT / 5234