Aspectos económicos e financeiros do desenvolvimento das infraestruturas de saneamento básico de novos empreendimentos urbanos / Eduardo Netto de Almeida, Luís Gonçalves Porto
Implementation of Council Directive 91/271/EEC of 21 May 1991 concerning urban wastewater treatment, as amended by Commission Directive 98/15/EC of 27 February 1998 : Third report / European Commission