| Title | Authors | Year | 
|---|---|---|
| Epiphyte recolonization of oaks along a gradient of air pollution in south-east England, 1979-1990. | 
                               Bates, J.W…  | 
                                                                                        1990 | 
| Calculated rates of soil acidification of intensively used grassland in the Netherlands. | 
                               Oenema, O…  | 
                                                                                        1990 | 
| Alger, lavar och Garrupprattning hos unggranar langs en kvavegradient Sverige-Holland | 
                               Garansson,…  | 
                                                                                        1990 | 
| Eutrophication: assessment, research and management with special reference to Scotland's Freshwaters | 
                               Bailey-…  | 
                                                                                        1990 | 
| Water and the Environment. Circular 7/89 | 
                               Department…  | 
                                                                                        1989 | 
| A regression model for nitrate leaching in Northern Ireland. | 
                               Smith, R.V…  | 
                                                                                        1989 | 
| Acute toxicity of six metals to the rotifer Brachionus calyciflorus, with comparisons to other freshwater organisms | 
                               Couillard,…  | 
                                                                                        1989 | 
| A global assessment of natural sources of atmospheric trace metals | 
                               Nriagu, J.O…  | 
                                                                                        1989 | 
| Unifying nutrient-chlorophyll relationships in lakes. | 
                               Prairie, Y.…  | 
                                                                                        1989 | 
| Peat acidification in Scotland | 
                               Skiba, U.;…  | 
                                                                                        1989 |