Rich and poor countries / Hans W. Singer and Javed A. Ansari. Singer, H. W. (Hans Wolfgang), 1910-2006. Ansari, Javed A. Economic history 1971-1990. HC59.7 .S467 1982 337.09 19 SIR Includes bibliographical references and index. London ; Boston : Allen & Unwin, 1982. 1982. 1982 Text 270 p. ; eng Studies in economics ; 12 Studies in economics (London, England) ; 12 Developing countries Economic conditions. Developing countries Dependency on foreign countries.