The demographic transition in tropical Africa : proceedings of an Expert Group meeting, Paris, 17th-19th November 1970 / - Paris : OECD , 1971 - ii, 348p. : ill. ; 23 cm. Includes bibliographical references and index. Subjects--Topical Terms: DemographyEconomic developmentSocial change Dewey Class. No.: 312 / OECD