Virtual water trade: an assessment of water use efficiency in the international food trade

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Yang, H., Wang, L., Abbaspour, K. C., & Zehnder, A. J. B. (2006). Virtual water trade: an assessment of water use efficiency in the international food trade. Hydrology and Earth System Sciences, 10(3), 443-454. https://doi.org/10.5194/hess-10-443-2006