%0 Book Section %B Acid deposition: its nature and impacts %D 1991 %T Acid rain since 1985 - times are changing %A Brydges, T.G. %A Wilson, R.B. %E Last, F.T. %E Watling, R. %B Acid deposition: its nature and impacts %S Proceedings of the Royal Society of Edinburgh %V 97 %P 1-15