RT null T1 [updated] Guidelines for in-person participants to UNEA-5.2 and UNEP@50 on COVID-19 prevention and risk mitigation measures A1 United Nations Environment Programme, K1 UN Environment Assembly YR 2022 FD 2022-02-12 LK https://wedocs.unep.org/handle/20.500.11822/38110 UL https://wedocs.unep.org/handle/20.500.11822/38110 NO [updated] Guidelines for in-person participants to UNEA-5.2 and UNEP@50 on COVID-19 prevention and risk mitigation measures DS UN Environment Document Repository RD Sep 25, 2026