This [http://www.bvsde.paho.org/bvsacd/cd66/ToiletsCompost/cap4.pdf document] contains a lot of information about building, maintaining a fossa alterna.
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== External links ==
* General information about Fossa alterna [http://www.wateraid.org www.wateraid.org ]
* Zimbabwe [http://aquamor.tripod.com aquamor.tripod.com ]