1. Factors affecting the net energy production from anaerobic digesters;Hawkes,1980
2. A note on the anaerobic digestion of poultry waste;Bousfield;Agric. Wastes,1979
3. Methane production from agricultural and domestic waste;Hobson,1981
4. Technological economics applied to waste recovery and treatment processes: capital cost estimation;Bridgewater;Effluent and Water Treatment J.,1977
5. Technological economics applied to waste recovery and treatment processes: cost data and operating costs;Bridgewater;Effluent and Water Treatment J.,1977