Better Farming Series 32 - Biogas 2: Building a Better Biogas Unit (FAO, 1986, 47 p.)

Better Farming Series 32 - Biogas 2: Building a Better Biogas Unit (FAO, 1986, 47 p.)

		(introduction...)
		Preface
		Introduction
		How to build a better small biogas unit
		Putting in the waste
		Time
		Temperature
		Scum
		When the gas is made
		Taking care of your biogas unit
		Making more biogas
		What more can you do?

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