%0 Book Section %B Atmospheric Ammonia %D 2009 %T Long-Term Cumulative Exposure Exacerbates the Effects of Atmospheric Ammonia on an Ombrotrophic Bog: Implications for Critical Levels %A Sheppard, L.J. %A Leith, I.D. %A Crossley, A. %A van Dijk, N. %A Cape, J.N. %A Fowler, D. %A Sutton, M.A. %E Sutton, M.A. %E Reis,S. %E Baker, S.M.H. %K Whim %B Atmospheric Ammonia %P 49-58 %G eng