| Title | Authors | Year | 
|---|---|---|
| Effects of cadmium and PCBs on reproduction of the sea star Asterias rubens: aberrations in the early development | 
                               Besten, P.…  | 
                                                                                        1989 | 
| Water and the Environment. Circular 7/89 | 
                               Department…  | 
                                                                                        1989 | 
| A regression model for nitrate leaching in Northern Ireland. | 
                               Smith, R.V…  | 
                                                                                        1989 | 
| Acute toxicity of six metals to the rotifer Brachionus calyciflorus, with comparisons to other freshwater organisms | 
                               Couillard,…  | 
                                                                                        1989 | 
| Global Emissions of Nitrogen and Sulfur-Oxides from 1860 to 1980 | 
                               Dignon, J…  | 
                                                                                        1989 | 
| A global assessment of natural sources of atmospheric trace metals | 
                               Nriagu, J.O…  | 
                                                                                        1989 | 
| Hematological Parameters in Fish Channa punctatus Under the Stress of Manganese | 
                               Garg, V. K…  | 
                                                                                        1989 | 
| Effects of ammonia emission on epiphytic lichen vegetation | 
                               DeBakker, A…  | 
                                                                                        1989 | 
| Interacting effects of soil acidity and canopy cover on the species composition of field layer vegetation in oak/hornbeam forests | 
                               Tyler, G.…  | 
                                                                                        1989 | 
| Forest decline and Air Pollution | 
                               Schulze, E.…  | 
                                                                                        1989 |