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

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

Putting in the waste

		The waste materials
		The starter
		Putting waste in this biogas unit
		After the waste is in