| Title | Authors | Year | 
|---|---|---|
| Seasonal changes in amino acids, protein and total nitrogen in needles of fertilised Scots pine trees | 
                               Näsholm, T…  | 
                                                                                        1990 | 
| Epiphyte recolonization of oaks along a gradient of air pollution in south-east England, 1979-1990. | 
                               Bates, J.W…  | 
                                                                                        1990 | 
| Eutrophication: assessment, research and management with special reference to Scotland's Freshwaters | 
                               Bailey-…  | 
                                                                                        1990 | 
| Forest decline, nutrient supply and diagnostic fertilisation in southwestern Germany and in southern California. | 
                               Huettl, R.F…  | 
                                                                                        1990 | 
| Wildlife toxicology | 
                               Hoffman, D.…  | 
                                                                                        1990 | 
| Afforestation and Lake Acidification: A Comparison of Four Sites in Scotland. | 
                               Kreiser, A.…  | 
                                                                                        1990 | 
| Mechanism of toxicity of zinc to the marine diatom Nitzschia closterium | 
                               Stauber, J…  | 
                                                                                        1990 | 
| The effect of air quality on tree growth. | 
                               Lee, H.S.J…  | 
                                                                                        1990 | 
| Forest soil chemical changes between 1949-50 and 1987 | 
                               Billett, M.…  | 
                                                                                        1990 | 
| Phytoavailability and toxicity of beryllium and vanadium | 
                               Kaplan, D…  | 
                                                                                        1990 |