TY - RPRT AU - United Nations Environment Programme PY - 2003 SN - 92-807-243 1-2 UR - https://wedocs.unep.org/handle/20.500.11822/30147 LA - English KW - fuel KW - vehicle KW - technology KW - climate change KW - air pollution KW - energy security TI - Natural Selection: Evolving Choices for Alternative Fuels and Vehicle Technologies M3 - Technical report ER -