| Title | Authors | Year | 
|---|---|---|
| Effects of ionising radiation on aquatic organisms | 
                               National…  | 
                                                                                        1991 | 
| The Distribution and Breeding Site Characteristics of Newts in Cumbria, England. | 
                               Denton, J.S…  | 
                                                                                        1991 | 
| Bryophytes and Nutrient Cycling | 
                               Brown, D.H…  | 
                                                                                        1990 | 
| Toxicity of heavy metals to brine shrimp Artemia. | 
                               Gajbhiye, S…  | 
                                                                                        1990 | 
| Air pollution and agricultural aphid pests. I: Fumigation experiments with SO2 and NO2. | 
                               Houlden, G…  | 
                                                                                        1990 | 
| Boron hazards to fish, wildlife, and invertebrates: a synoptic review | 
                               Eisler, R…  | 
                                                                                        1990 | 
| Decline of the natterjack toad Bufo clamita in Britain: Paleoecological, documentary and experimental evidence for breeding site acidification | 
                               Beebee, T.J…  | 
                                                                                        1990 | 
| The nutritional status of Picea abies (L.) Karst. across Europe, and implications for "forest decline". | 
                               Cape, J.N…  | 
                                                                                        1990 | 
| Phytoavailability and toxicity of beryllium and vanadium | 
                               Kaplan, D…  | 
                                                                                        1990 | 
| Growth Dynamics of Wheat (Triticum aestivum L.) Exposed to Sulfur Dioxide Pollution. | 
                               Lorenzini,…  | 
                                                                                        1990 |