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close this bookBetter Farming Series 32. Biogas 2: Building a Better Biogas Unit (FAO Better Farming Series, 1986)
close this folderHow to build a better small biogas unit
View the documentYou will need
View the documentCleaning the oil drum
View the documentWhere to put your biogas unit
View the documentPreparing the oil drum
View the documentTesting for leaks
View the documentPreparing the gas holder
View the documentAttaching the gas holder