Biological aspects of freshwater pollution : proceedings of the course held at the Joint Research Center of the Commission of the European Communities, Ispra, Italy, 5-9 June 1978 - Ravera, O; Commission of the European Communities. Joint Research Centre (Oxford : Published for the Commission of the European Communities by Pergamon, 1979)
Keywords: Water -- Pollution -- Environmental aspects -- Congresses; Freshwater ecology -- Congresses; Aquatic animals -- Effect of water pollution on -- Congresses