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Huan Jing Ke Xue= Huanjing Kexue|April 30, 2008
[Influence on three categories of metal ions on adsorption of humic acid by activated sludge]Hua-Jun Feng, Li-Fang Hu, Cai-Di Qiu, et al.
Huan Jing Ke Xue= Huanjing Kexue|May 13, 2009
[Novel resources utilization technique for rural domestic refuse]Cai-Di Qiu, Ruo He, Song-Mei Chen, et al.
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