1. Process Design Manual for Nitrogen Control;Anon,1975
2. Pilot scale studies on the treatment of domestic sewage by two-stage biological filtration—with special reference to nitrification;Bruce;Wat. Pollut. Control,1975
3. Complete treatment of sewage in a two fluidised bed system;Cooper;Wat. Pollut. Control,1982
4. Treatability studies on leachate from a co-disposal landfill;Knox;Envir. Pollut. Ser. B,1983
5. On-site treatment irons out problems;Porter;Surveyor,1981