| Type |  Book |
| ชื่อเรื่อง | China, azolla propagation and small-scale biogas technology : report on an FAO/UNDP study tour to the People's Republic of China, 21 May-11 June 1978 / Food and Agriculture Organization of the United Nations |
| ผู้แต่ง | Food and agriculture organization of the united nations |
| ISBN | 9251007217 (pbk.) |
| พิมพลักษณ์ | Rome : Food and Agriculture Organization, 1978 |
| รูปเล่ม | xii, 81 p. : ill |
| หัวเรื่อง | Azolla as feed --China [] |
| | Azolla as fertilizer --China [] |
| | Azolla pinnata |
| | Biogas |
| | Farm manure |
| | Gas-producers |
| | Methane |