Opinion of the Commission pursuant to Article 189 b (2) (d) of the EC Treaty, on the European Parliament's amendmentsto the Council's common position regarding the proposal for a European Parliament and Council Directive amending Council Directive 92/50/EEC relating to the coordination of procedures for the award of public service contracts, Council Directive 93/36/EEC coordinating procedures forthe award of public supply contracts and Council Directive 93/37/EEC concerning the coordination of procedures for the award of public works contracts; Amending the Proposal of the Commission pursuant to Article 189 a (2) of the EC Treaty. COM (97) 289 final, 30 June 1997