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 programmes.
發表於2025-02-07
A Chinese Biogas Manual 2025 pdf epub mobi 電子書 下載
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A Chinese Biogas Manual 2025 pdf epub mobi 電子書 下載