 |  | Better Farming Series 31 - Biogas: What it is; How it is made; How to use it (FAO, 1984, 52 p.) |
 |  | (introduction...) |
| | Preface |
|  | Introduction |
| | (introduction...) |
| | Biogas |
| | How is biogas made? |
| | How big should your biogas unit be? |
| | How to build a small biogas unit |
| | (introduction...) |
| | You will need |
| | Where to put your biogas unit |
| | Building the unit |
| | Testing for leaks |
| | Waste materials |
| | What waste materials to use |
| | How to use them |
| | Making a starter |
| | Putting waste into your biogas unit |
| | Time |
| | Cold weather protection |
| | Stirring the waste mixture |
| | When the gas is made |
| | Using your biogas |
| | Using the fertilizer |
| | Taking care of your biogas unit |
| | Making more biogas |
