| Title | Authors | Year | 
|---|---|---|
| Effects of SO2, NO2, and O3 on Population Development and Morphological and Physiological Parameters of Native Herb Layer Species in a Beech Forest. | 
                               Steubing, L…  | 
                                                                                        1989 | 
| Acute toxicity of six metals to the rotifer Brachionus calyciflorus, with comparisons to other freshwater organisms | 
                               Couillard,…  | 
                                                                                        1989 | 
| The comparative chemistries of platinum group metals and their periodic neighbors in marine macrophytes | 
                               Yang, J. S…  | 
                                                                                        1989 | 
| A global assessment of natural sources of atmospheric trace metals | 
                               Nriagu, J.O…  | 
                                                                                        1989 | 
| Statutory Instrument (1989): The Sludge (Use in Agriculture) Regulations | 
                               HMSO,  | 
                                                                                        1989 | 
| Effects of ammonia emission on epiphytic lichen vegetation | 
                               DeBakker, A…  | 
                                                                                        1989 | 
| Simulation of the long-term soil response to acid deposition in various buffer ranges | 
                               Vries, W.;…  | 
                                                                                        1989 | 
| The acidification of Scottish lochs | 
                               Battarbee,…  | 
                                                                                        1989 | 
| Water and the Environment. Circular 7/89 | 
                               Department…  | 
                                                                                        1989 | 
| Indigenous and cultivated plants as bioindicators | 
                               Weinstein,…  | 
                                                                                        1989 |