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===指南、视频与链接===
* [http://www.nzdl.org/gsdlmod?e=d-00000-00---off-0fnl2.2--00-0----0-10-0---0---0direct-10---4-------0-1l--11-en-50---20-about---00-0-1-00-0--4----0-0-11-10-0utfZz-8-00&a=d&cl=CL3.31&d=HASHa7909460293ada0236fd7d.4.2.2.5 Sourcebook of Alternative Technologies for Freshwater Augmentation in Africa 非洲增加淡水替代技术资料读物 (UNEP-IETC, 1998, 182 p.)] 或 ([http://www.washdoc.info/docsearch/title/115176 其它链接]). UNEP.
===鸣谢===
