Electronic Data Interchange (1992-1996)

30 th Session, 26 February - 8 March 1996, New York

29 th Session, 27 February - 10 March 1995, New York

28 th Session, 3-14 October 1994, Vienna

27 th Session, 28 February-11 March 1994, New York

26 th Session, 11-22 October 1993, Vienna

25 th Session, 4-15 January 1993, New York