| Title | Authors | Year | 
|---|---|---|
| The acidification of Scottish lochs | 
                               Battarbee,…  | 
                                                                                        1989 | 
| Water and the Environment. Circular 7/89 | 
                               Department…  | 
                                                                                        1989 | 
| Effects of N-emissions on nutrient status and vitality of Pinus sylvestris near a hen house. | 
                               …  | 
                                                                                        1989 | 
| Hematological Parameters in Fish Channa punctatus Under the Stress of Manganese | 
                               Garg, V. K…  | 
                                                                                        1989 | 
| Global Emissions of Nitrogen and Sulfur-Oxides from 1860 to 1980 | 
                               Dignon, J…  | 
                                                                                        1989 | 
| Acid rain and eggshells | 
                               Drent, P.J…  | 
                                                                                        1989 | 
| Interacting effects of soil acidity and canopy cover on the species composition of field layer vegetation in oak/hornbeam forests | 
                               Tyler, G.…  | 
                                                                                        1989 | 
| Manganese induced haematological and biochemical anomalies in Heteropneustes fossilis | 
                               Garg, V. K…  | 
                                                                                        1989 | 
| Forest decline and Air Pollution | 
                               Schulze, E.…  | 
                                                                                        1989 | 
| Environmental Health Criteria 85 Lead- Environmental Aspects | 
                               WHO,  | 
                                                                                        1989 |