| Title | Authors | Year | 
|---|---|---|
| Physiological effects of long term exposure to low concentrations of SO2 and NH3 on poplar leaves. | 
                               Hove, L.W.A…  | 
                                                                                        1991 | 
| The Distribution and Breeding Site Characteristics of Newts in Cumbria, England. | 
                               Denton, J.S…  | 
                                                                                        1991 | 
| Bryophytes and Nutrient Cycling | 
                               Brown, D.H…  | 
                                                                                        1990 | 
| Yield Responses of Different Crop Species to Long-Term Fumigation with Sulphur Dioxide in Open-Top Chambers | 
                               Weigel, H.J…  | 
                                                                                        1990 | 
| Mechanism of toxicity of zinc to the marine diatom Nitzschia closterium | 
                               Stauber, J…  | 
                                                                                        1990 | 
| Toxicity of heavy metals to brine shrimp Artemia. | 
                               Gajbhiye, S…  | 
                                                                                        1990 | 
| Fine Root Studies in situ and in the Laboratory. | 
                               Wollmer, H…  | 
                                                                                        1990 | 
| Boron hazards to fish, wildlife, and invertebrates: a synoptic review | 
                               Eisler, R…  | 
                                                                                        1990 | 
| The nutritional status of Picea abies (L.) Karst. across Europe, and implications for "forest decline". | 
                               Cape, J.N…  | 
                                                                                        1990 | 
| Decline of the natterjack toad Bufo clamita in Britain: Paleoecological, documentary and experimental evidence for breeding site acidification | 
                               Beebee, T.J…  | 
                                                                                        1990 |