| Title | Authors | Year | 
|---|---|---|
| Seasonal changes in amino acids, protein and total nitrogen in needles of fertilised Scots pine trees | 
                               Näsholm, T…  | 
                                                                                        1990 | 
| Alger, lavar och Garrupprattning hos unggranar langs en kvavegradient Sverige-Holland | 
                               Garansson,…  | 
                                                                                        1990 | 
| Wildlife toxicology | 
                               Hoffman, D.…  | 
                                                                                        1990 | 
| The effect of air quality on tree growth. | 
                               Lee, H.S.J…  | 
                                                                                        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 | 
| Effects of nitrogen dioxide pollution on the growth of 3 fern species. | 
                               Ashenden, T…  | 
                                                                                        1990 | 
| The variation in the acidity of ground and surface waters in Northern Ireland | 
                               Jordan, C…  | 
                                                                                        1990 | 
| Epiphyte recolonization of oaks along a gradient of air pollution in south-east England, 1979-1990. | 
                               Bates, J.W…  | 
                                                                                        1990 | 
| Growth Dynamics of Wheat (Triticum aestivum L.) Exposed to Sulfur Dioxide Pollution. | 
                               Lorenzini,…  | 
                                                                                        1990 |