| Title | Authors | Year | 
|---|---|---|
| The variation in the acidity of ground and surface waters in Northern Ireland | 
                               Jordan, C…  | 
                                                                                        1990 | 
| Calculated rates of soil acidification of intensively used grassland in the Netherlands. | 
                               Oenema, O…  | 
                                                                                        1990 | 
| Growth Dynamics of Wheat (Triticum aestivum L.) Exposed to Sulfur Dioxide Pollution. | 
                               Lorenzini,…  | 
                                                                                        1990 | 
| Successional changes in the soft-water macrophyte vegetation of (sub)atlantic, sandy, lowland regions during this century | 
                               Arts, G.H.P…  | 
                                                                                        1990 | 
| Bryophytes and Nutrient Cycling | 
                               Brown, D.H…  | 
                                                                                        1990 | 
| Afforestation and Lake Acidification: A Comparison of Four Sites in Scotland. | 
                               Kreiser, A.…  | 
                                                                                        1990 | 
| Toxicity of heavy metals to brine shrimp Artemia. | 
                               Gajbhiye, S…  | 
                                                                                        1990 | 
| Sediment chemistry and atmospheric contamination | 
                               Rippey, B…  | 
                                                                                        1990 | 
| Boron hazards to fish, wildlife, and invertebrates: a synoptic review | 
                               Eisler, R…  | 
                                                                                        1990 | 
| Decline of carpophores of mycorrhizal fungi instand, of Pinus sylvestris | 
                               …  | 
                                                                                        1990 |