Letter on a Form The Chairman of WG 2.6 G.M.Nijssen sends a report on a Group work during the period: September 1, 1975 - January 1, 1976. Date: 06.01.1976 Original document language: English Authors: G. M. Nijssen Persons: Tosiyasu L. Kunii, E.F. Falkenberg Addressee: Thomas B. Steel, Jr.