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 UNITED NATIONS

To: Members of the staff

From: The Under-Secretary-General for Conference Services and Special Assignments

Subject: REGULATIONS FOR THE CONTROL AND LIMITATION OF DOCUMENTATION Addendum COPYRIGHT IN UNITED NATIONS PUBLICATIONS: GENERAL PRINCIPLES, PRACTICE AND PROCEDURE

The Organization's policy governing copyright in United Nations publications was announced in administrative instruction ST/AI/189/Add.9/Rev.1 of 21 March 1985. A revised copyright policy was announced by administrative instruction ST/AI/189/Add.9/Rev.2 of 17 September 1987 and was put into effect on an experimental basis from 1 October 1987 to 31 December 1989. The purpose of the present instruction is to extend the experimental period until 31 December 1991, during which time the revised policies announced in administrative instruction ST/AI/189/Add.9/Rev.2 will continue to apply.

90-09013 1653d (E)