1. Powdered activated carbon improves anaerobic digestion;Adams;Water Sew. Works,1976
2. Standard methods for the examination of water and waste water;American Public Health Association,1975
3. Bacterial fermentations;Barker,1956
4. Microbiology of anaerobic treatment processes;Hobson,1973
5. Combined powdered activated carbon-biological treatment;Hutton,1978