TY - Front. Environ. Sci. Eng. A1 - Liang GUO, Ying ZHAO, Peng WANG T1 - Determination of the principal factors of river water quality through cluster analysis method and its prediction Y1 - 2012-04-01 JF - Frontiers of Environmental Science & Engineering JO - Front. Environ. Sci. Eng. SP - 238 EP - 245 VL - 6 IS - 2 UR - https://journal.hep.com.cn/fese N1 - 10.1007/s11783-011-0382-7 ER -