Machine generated contents note: Chapter 1 Introduction 1 -- J.N.B. Bell and M. Treshow -- Chapter 2 Historical perspectives 5 -- M. Treshow and J.N.B. Bell -- Chapter 3 Emissions, dispersion and atmospheric transformation 23 -- R.N. Colvile -- Chapter 4 Pollutant deposition and uptake by vegetation 43 -- D. Fowler -- Chapter 5 Effects of oxidants at the biochemical, cell -- and physiological levels, with particular reference to ozone 69 -- S.P. Long and S.L. Naidu -- Chapter 6 Effects of oxidants at the whole plant and community level 89 -- M.R. Ashmore -- Chapter 7 Nitrogen oxides: old problems and new challenges 119 -- T.A. Mansfield -- Chapter 8 Effects of sulphur dioxide 135 -- A.H. Legge and S.V. Krupa -- Chapter 9 Effects of fluorides 163 -- D.C. McCune and L.H. Weinstein -- Chapter 10 Effects of volatile organic compounds 173 -- C.D. Collins and J.N.B. Bell -- Chapter 11 Effects of particulates 187 -- A. Farmer -- Chapter 12 Effects of increased nitrogen deposition 201 -- R. Bobbink and L.P.M. Lamers -- Chapter 13 Effects of wet deposited acidity 237 -- T.W. Ashenden -- Chapter 14 Effects of pollutant mixtures 251 -- A. Fangmeier, J. Bender, H.-J. Weigel and H.-J. Jiiger -- Chapter 15 Forest decline and air pollution: an assessment -- of 'forest health' in the forests of Europe, -- the Northeastern United States, and Southeastern Canada 273 -- J.L. Innes and J.M. Skelly -- Chapter 16 Effects of acidic deposition on aquatic ecosystems 295 -- R. Harriman, R.W. Battarbee and D.T. Monteith -- Chapter 17 Effects on bryophytes and lichens 309 -- J.W. Bates -- Chapter 18 Modification of plant response by environmental conditions 343 -- G. Mills -- Chapter 19 Air pollutant-abiotic stress interactions 359 -- A.W. Davison and J.D. Barnes -- Chapter 20 Effects of air pollutants on biotic stress 379 -- W. Fluckiger, S. Braun and E. Hiltbrunner -- Chapter 21 Effects of air pollutants in developing countries 407 -- F.M. Marshall -- Chapter 22 Air quality guidelines and their role in pollution control policy 417 -- M.R. Ashmore -- Chapter 23 Air pollution and climate change 431 -- V.C. Runeckles -- Chapter 24 Conclusions and future directions 455 -- J.N.B. Bell.