TY - GEN AU - United Nations Environment Programme A4 - Coyne, Steven PY - 2023 SN - 978-92-807-4050-9 UR - https://wedocs.unep.org/handle/20.500.11822/43126 LA - English PB - United Nations Environment Programme KW - custom TI - Guidelines on Harmonized System Customs Codes and National Statistical Codes for Energy-Efficient Lighting M3 - Technical guideline ER -