12th and 13th United Nations Regional Cartographic Conference for Asia and the Pacific.
Adopted at the 9th plenary, 28 May 1991. In: Resolutions and decisions adopted by the Economic and Social Council at its 1st regular session of 1991, 13-31 May 1991. - E/1991/INF/5. - 5 July 1991. - p. 84. - Issued in ESCOR, 1991, Suppl. no. 1.