| Title | Authors | Year | 
|---|---|---|
| Boron hazards to fish, wildlife, and invertebrates: a synoptic review | 
                               Eisler, R…  | 
                                                                                        1990 | 
| Forest soil chemical changes between 1949-50 and 1987 | 
                               Billett, M.…  | 
                                                                                        1990 | 
| Air pollution and tree-dwelling aphids. Population Dynamics of Forest Insects | 
                               McNeill, S…  | 
                                                                                        1990 | 
| Exchange of greenhouse gases between terrestrial ecosystems and the atmosphere | 
                               Bouwman, A.…  | 
                                                                                        1990 | 
| Mechanism of toxicity of zinc to the marine diatom Nitzschia closterium | 
                               Stauber, J…  | 
                                                                                        1990 | 
| Fresh-water acidification - its effects on species and communities of fresh-water microbes, plants and animals | 
                               Muniz, I.P…  | 
                                                                                        1990 | 
| Fine Root Studies in situ and in the Laboratory. | 
                               Wollmer, H…  | 
                                                                                        1990 | 
| Decline of carpophores of mycorrhizal fungi instand, of Pinus sylvestris | 
                               …  | 
                                                                                        1990 | 
| Comparative toxicity of inorganic contaminants released by placer mining to early life stages of salmonids | 
                               Buhl, K. J…  | 
                                                                                        1990 | 
| Acidic Deposition, its nature and impacts, Glasgow Conference Abstracts | 
                               Caporn, S.J…  | 
                                                                                        1990 |