http://www.longbrancheec.org/pubs/composting_toilet.html
Commercial composting toilets:
http://weblife.org/humanure/chapter6_5.html
Check this out, too:
http://www.swsloo.com/
A great website on wastewater treatment with images and good descriptions:
http://www.vsb.cape.com/~nature/greencenter/tb/tb006.htm
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