| Title | Authors | Year | 
|---|---|---|
| Effects of acidic gases and mists on the reproductive capability of 3 fern species | 
                               Lawrence, P…  | 
                                                                                        1993 | 
| Sphagnum species and polluted environments, past and future | 
                               Lee, J.A.;…  | 
                                                                                        1993 | 
| Chromium toxicity in Salvia scarea I Effects of hexavalent chromium on seed germination and seedline development | 
                               Corraddi, M…  | 
                                                                                        1993 | 
| Nitrogen eutrophication and critical load for nitrogen based upon changes in flora and fauna in (semi)-natural terrestrial ecosystems | 
                               Bobbink, R…  | 
                                                                                        1993 | 
| SSSIs in England at risk from acid rain | 
                               Bissett, K…  | 
                                                                                        1993 | 
| Review of the impact of current and future acid deposition in Wales | 
                               Reynolds, B…  | 
                                                                                        1993 | 
| Dissolved inorganic nitrogen budget for a forested catchment at Beddgelert, North Wales | 
                               Stevens, P.…  | 
                                                                                        1993 | 
| Reproduction in two submersed macrophytes declines progressively at low pH. | 
                               Titus, J.E…  | 
                                                                                        1993 | 
| Critical Loads - Concepts and Applications | 
                               Cresser, M.…  | 
                                                                                        1993 | 
| The effect of external stress and disturbance factors on Calluna dominated heathland vegetation. | 
                               Berdowski,…  | 
                                                                                        1993 |