TY - BOOK T1 - China azolla propagation and small-scale biogas technology. T2 - FAO soils bulletin LA - English PP - Rome PB - FAO YR - 1979 UL - https://ds.mainlib.upd.edu.ph/Record/UP-99796217611778824 OP - 81 NO - Report on an FAO/UNDP study tour to the People's Republic of China, 21 May-11 June 1978. CN - SB 317 A94 F66 KW - Azolla : Econ. aspects. KW - Ferns : China. KW - Waste products as fuel. KW - Biogas. ER -