Subject(s): Biogas in Nepal, China, India -- Economics of Biogas system -- natural biogas programmes -- Organisation and management of Biogas management : Resource management, Communication, management of technical projects, management training -- How biogas works : Effects of pH, Toxins, Digester design parameters, Research on microbiology and slurry use -- Biogass plant design : basic plant design, Floating drum design, Fixed drum design, Dome design, Plant size -- Ancillary equipment : Slurry handling, gas piping, Gas valves, Biogas stoves and lights -- Biogass in Engines : Biogas used in Cottage industries and industrial use -- Operating a biogas system : Microbiological problems, Safety of biogas -- Economic of biogas system : Domestic biogas plants, Milling system, Irrigation system -- Community biogas: group owned and village owned Biogas plant -- Biogas research and development -- Politics of biogas : national view of biogas technology, Fuel crisis, Local concepts of biogas technology, Political aspects of community biogas