Report of the United Nations commission on international trade law : on the work of its twenty-first session, 11-22 April 1988/ United Nations. United Nations. International trade. 382 UNR "General assembly, official records : forty-third session, supplement no. 17 (A/43/17)" Includes bibliographical references. New York : United Nations, 1988. 1988. 1988 Text iv, 32 p. ; eng