TY - JOUR A1 - Yang, H. A1 - Wang, L. A1 - Abbaspour, K. C. A1 - Zehnder, A. J. B. T1 - Virtual water highway: water use efficiency in global food trade JO - Hydrol. Earth Syst. Sci. Discuss. J1 - HESSD VL - 3 IS - 1 SP - 1 EP - 26 Y1 - 2006/01/02 PB - Copernicus Publications SN - 1812-2108 UR - http://www.hydrol-earth-syst-sci-discuss.net/3/1/2006/ L1 - http://www.hydrol-earth-syst-sci-discuss.net/3/1/2006/hessd-3-1-2006.pdf ER -