Policy and performance in international trade : papers of the Sixth Annual Conference of the International Economics Study Group / edited by John Black and L. Alan Winters. International Economics Study Group. Conference (6th : 1981 : University of Sussex) Black, John, 1931- Winters, L. Alan. Commercial policy Congresses. International economic relations Congresses. HF1410.5 .I573x 1981b 382 POL Includes bibliographies and index. London : Macmillan, 1983. 1983. 1983 Text xviii, 203 p. : eng