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Technology Roadmap - Biofuels for Transport / IEA, 2011, 56 p.http://www.iea.org/papers/2011/biofuels_roadmap.pdfBiofuels can provide up to 27% of world transportation fuel by 2050, IEA report says - IEA  ‘roadmap’ shows how biofuel production can be expanded in a sustainable  way, and identifies needed technologies and policy actions...