China azolla propagation and small-scale biogas technology.

书目详细资料
企业作者:	Food and Agriculture Organization of the United Nations
格式:	图书
语言:	English
出版:	Rome FAO 1979.
丛编:	FAO soils bulletin 41.
主题:	Azolla > Econ. aspects. Ferns > China. Waste products as fuel. Biogas.