China azolla propagation and small-scale biogas technology.

Détails bibliographiques
Collectivité auteur:	Food and Agriculture Organization of the United Nations
Format:	Livre
Langue:	English
Publié:	Rome FAO 1979.
Collection:	FAO soils bulletin 41.
Sujets:	Azolla > Econ. aspects. Ferns > China. Waste products as fuel. Biogas.