Singer, Hans W. . Rich and poor countries / Hans W.Singer and Javed A.Ansari. - 3rd / . - London : George allen and unwin , 1982. - 270p. : ills., ; 24cm . - Studies in economics; 12, NULL NULL; . - Studies in economics; 12, NULL NULL; . Includes index ISBN: 5.95 (pbk) Subjects--Index Terms: UNDERDEVELOP AREAS Dewey Class. No.: 337.1724 / SIN/R