TY - BOOK ED - United Nations. TI - The state of transboundary air pollution: report prepared within the framework of the Convention on Long-range Transboundary Air Pollution SN - 9211166535 U1 - 363.7392 21 PY - 1996/// CY - New York PB - United Nations KW - Air KW - Pollution KW - Transboundary pollution KW - Sulfur KW - Environmental aspects KW - Trees KW - Effect of air pollution on KW - Europe KW - Forest conservation N1 - At head of title: Economic Commission for Europe; "ECE/EB.AIR/47"; "United Nations publication sales no. E.93.II.E.21"--t.p. verso; Includes bibliographical references ER -