| Title | Authors | Year | 
|---|---|---|
| Exchange of greenhouse gases between terrestrial ecosystems and the atmosphere | 
                               Bouwman, A.…  | 
                                                                                        1990 | 
| Forest decline, nutrient supply and diagnostic fertilisation in southwestern Germany and in southern California. | 
                               Huettl, R.F…  | 
                                                                                        1990 | 
| Mechanism of toxicity of zinc to the marine diatom Nitzschia closterium | 
                               Stauber, J…  | 
                                                                                        1990 | 
| The effects of sulphur dioxide on the parasitism of the rust fungus Uromyces viciae-fabae on Vicia faba. | 
                               Lorenzini,…  | 
                                                                                        1990 | 
| Air pollution and agricultural aphid pests. I: Fumigation experiments with SO2 and NO2. | 
                               Houlden, G…  | 
                                                                                        1990 | 
| Decline of carpophores of mycorrhizal fungi instand, of Pinus sylvestris | 
                               …  | 
                                                                                        1990 | 
| Sediment chemistry and atmospheric contamination | 
                               Rippey, B…  | 
                                                                                        1990 | 
| Fine Root Studies in situ and in the Laboratory. | 
                               Wollmer, H…  | 
                                                                                        1990 | 
| Phytoavailability and toxicity of beryllium and vanadium | 
                               Kaplan, D…  | 
                                                                                        1990 | 
| Forest soil chemical changes between 1949-50 and 1987 | 
                               Billett, M.…  | 
                                                                                        1990 |