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close this bookBetter Farming Series 31 - Biogas: What it is; How it is made; How to use it (FAO, 1984, 52 p.)
close this folderHow to build a small biogas unit
View the document(introduction...)
View the documentYou will need
View the documentWhere to put your biogas unit
View the documentBuilding the unit
View the documentTesting for leaks