| Title | Authors | Year | 
|---|---|---|
| The comparative chemistries of platinum group metals and their periodic neighbors in marine macrophytes | 
                               Yang, J. S…  | 
                                                                                        1989 | 
| Statutory Instrument (1989): The Sludge (Use in Agriculture) Regulations | 
                               HMSO,  | 
                                                                                        1989 | 
| Effects of ammonia emission on epiphytic lichen vegetation | 
                               DeBakker, A…  | 
                                                                                        1989 | 
| Environmental Health Criteria 85 Lead- Environmental Aspects | 
                               WHO,  | 
                                                                                        1989 | 
| Simulation of the long-term soil response to acid deposition in various buffer ranges | 
                               Vries, W.;…  | 
                                                                                        1989 | 
| Peat acidification in Scotland | 
                               Skiba, U.;…  | 
                                                                                        1989 | 
| The acidification of Scottish lochs | 
                               Battarbee,…  | 
                                                                                        1989 | 
| Environmental Health Criteria 86 Mercury- Environmental Aspects | 
                               WHO,  | 
                                                                                        1989 | 
| Water and the Environment. Circular 7/89 | 
                               Department…  | 
                                                                                        1989 | 
| A regression model for nitrate leaching in Northern Ireland. | 
                               Smith, R.V…  | 
                                                                                        1989 |