铅白

International Workshop on Nitride Semiconductors

International Workshop on Oxide Electronics

United Nations Conference on Environment and Development

World Congress on Hydrogen Sulfide in Biology and Medicine

Agreement on the Implementation of a European Project on Pollution, on the Topic 'research into Physico-chemical Behaviour of Sulphur Dioxide in the Atmosphere'

Convention Concerning the Use of White Lead in Painting

Convention for the Protection of the Rhine from Pollution by Chlorides Modified by Exchanges of Letters

Protocol Additional to the Convention for the Protection of the Rhine from Pollution by Chlorides

Protocol to Abate Acidification, Eutrophication and Ground-level Ozone

Protocol to the 1979 Convention on Long Range Transboundary Air Pollution Concerning the Control of Nitrogen Oxides Emissions or Their Transboundary Fluxes

Protocol to the 1979 Convention on Long Range Transboundary Air Pollution on Further Reduction of Sulphur Emissions

Protocol to the 1979 Convention on Long Range Transboundary Air Pollution on the Reduction of Sulphur Emissions or Their Transboundary Fluxes by at Least 30 per Cent