Sabot, R. H. The social costs of urban surplus labour / by R.H. Sabot. - Paris : Organisation for Economic Cooperation and Development, 1977. - 104 p. ; 24 cm. - Employment series ; no. 14 . Includes bibliographical references ( p. 101-104) ISBN: 9264116907 Subjects--Topical Terms: Unemployed -- Tanzania. Rural-urban migration