TY - GEN AU - United Nations Environment Programme PY - 2006 SN - 978-92-807-2771-5 UR - https://wedocs.unep.org/handle/20.500.11822/8731 LA - English PB - United Nations Environment Programme TI - Handbook for the Vienna Convention for the Protection of the Ozone Layer (1985) - Seventh edition (2006) M3 - Technical guideline ER -