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A Comprehensive Introduction to Water Footprints

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<strong>Water</strong> footprint of biofuels from different crops [litre/litre][Gerbens-Leenes, Hoekstra & Van der Meer, 2009]Source: Gerbens-Leenes, W., Hoekstra, A.Y. and Van der Meer, T.H. (2009) Thewater footprint of bio-energy, Proceedings of the National Academy of Sciences,PNAS Early Edition, doi:10.1073/pnas.0812619106.27

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