China azolla propagation and small-scale biogas technology.

Bibliografiska uppgifter
Institutionell upphovsman:	Food and Agriculture Organization of the United Nations
Materialtyp:	Bok
Språk:	English
Publicerad:	Rome FAO 1979.
Serie:	FAO soils bulletin 41.
Ämnen:	Azolla > Econ. aspects. Ferns > China. Waste products as fuel. Biogas.