RT null T1 [Invitation to the Organizational Session of the Ad hoc Open-ended Working Group Established by General Assembly resolution 72/277] A1 United Nations General Assembly, K1 environmental law K1 working group K1 official correspondence K1 United Nations YR 2018 FD 2018-07 LK https://wedocs.unep.org/handle/20.500.11822/25985 UL https://wedocs.unep.org/handle/20.500.11822/25985 NO Letter from the Co-Chairs submitted under a cover letter from the President of the General Assembly to All Permanent Representatives and Permanent Observers to the United Nations. DS UN Environment Document Repository RD Sep 19, 2026