RT null T1 Urban Air Quality Management Toolbook A1 United Nations Environment Programme, A1 United Nations Human Settlements Programme, K1 air quality YR 2000 FD 2000 LK https://wedocs.unep.org/handle/20.500.11822/8728 UL https://wedocs.unep.org/handle/20.500.11822/8728 NO The Handbook presents the air quality management process in a systematic sequence ofactivities. This sequence, referred to as the Environment Planning and Management (EPM)process, is based on the experience of cities around the world and represents a realisticapproach to the complex tasks of urban environmental planning and management. DS UN Environment Document Repository RD Sep 18, 2026