Present state of the ECE emission data and the database: Note by the Meteorlogical Synthesizing Centre-West prepared in consultation with the secretariat ; Economic Commission for Europe, Executive Body for the Convention on Long-range Transboundary Air Pollution, Steering Body to the Cooperative Programme for Monitoring and Evaluation of the Long-range Transmission of Air Pollutants in Europe (EMEP), twentieth session, Geneva, 2-4 September 1996. Item 6 (a) of the provisional agenda