 | | Mobilization of renewable energy sources in developing countries |
| | Second biogas seminar in Oberreifenberg |
| | Standardization of biogas units |
| | The diffusion of familly-size unit biogas plants |
| | Biogas technology and site-oriented agriculture |
| | Fermentation of poultry excrement/rice chaff mixtures |
| | Biogas storage tanks of plastic sheet |
| | Economic and socio-economic evaluation of biogas units from the users' point of view |
