%0 Generic %D 1979 %T Studies on the effects of low levels of sulphur dioxide on the growth of Lolium Perenne L. %A Bell, J.N.B. %A Rutter, A.J. %A Relton, J. %B New Phytologist %V 83 %P 627-643 %G eng %0 Generic %D 1977 %T Sulphur dioxide and growth of Pinus sylvestris %A Farrar, J.F. %A Relton, J. %A Rutter, A.J. %B Journal of Applied Ecology %V 14 %P 861-875