Uses diagrams and pictures to show how the basic design of the biogas pit can be adapted for construction in different soils, from sandstone to sheer rock, which should encourage other developing countries to embark on their own biogas programs. Reprinted in 1997.
Why Biogas Digesters Are the Key to a Sustainable Future (First published October 2010. Updated 5 October 2025.) Biogas digesters are not just another renewable technology — they are one of huma…
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