1. Product information: Vegetables and fruit;Anon,1979
2. Standard methods for the examination of water and wastewater;APHA,1975
3. Energy from bioconversion of waste materials;De Renzo,1977
4. Anaerobic digestion of solid organic wastes (process selection and pilot plant research);Hofenk,1983
5. Two-phase process for the anaerobic digestion of organic wastes yielding methane and compost;Hofenk,1982