Recycling technologies, treatment of wsate, remediation of contaminated sites and life cycle assessment / workshop on... 30 Sept. to 4 Oct. 1997 ; co-org. by Instituto Nacional de Engenharia e Tecnologia Industrial and The Environment and Climate Programme of the European Commission, DGXII/D1 ; ed. J. Busing, C. A. Nogueira, F. Rodrigues