Selected papers: Environmental protection in the United States pulp, paper, and paperboard industry: An overview of regulation of wastewater under the US Clean Water Act, R W Hanmer. Reducing the discharges to water - technical objectives, H A Norrstrom. Requirements for the treatment of effluents from chemical pulp mills in the FRG, L Huber & H Baumung; The developments of waste water treatment in the Finnish pulp and paper industry, A Luonsi et al . Water pollution abatement in small paper mills in India, L Panneerselvam. Summary of results from the Swedish project 'Environment/Cellulose', A Sodergren et al . Practical experiences in activated sludge treatment within the Metsa-Serla group, J Kettunen. The efficiency of a biological activated sludge effluent treatment plant with extended aeration, R Skogman. Partitioning of organic chlorine between bulk water and benthal interstitial water through a kraft mill aerated lagoon, C W Bryant et al . Control of the phosphorus level of effluent in the treatment of forest industry waste waters, P Vaananen. On site high rate UASB anaerobic demonstration plant treatment of NSSC wastewater, L H A Habets et al . The Taman process: Experiences of full-scale operation at Anjala paper mill, M Lehtomaki. Sequential anaerobic and aerobic treatment of kraft pulping wastes, R Qiu et al . Improvement of COD elimination in activated sludge treatment plant for pulp and paper mill waste waters, C H Mobius. Anaerobic treatment of sulphur-containing effluents, M Pichon et al . An anaerobic process for treatment of CTMP effluent, T Welander.