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致谢===
* [http://whqlibdoc.who.int/publications/2011/9789241548151_eng.pdf Guidelines for Drinking-water Quality.] 第四版世界卫生组织（WHO）2011
* Skye McAllister. [http://www.pottersforpeace.com/ Analysis and Comparison of Sustainable Water Filters.] 2005年5月.
