| Title | Authors | Year | 
|---|---|---|
| Critical Load Maps for the United Kingdom I: Soil | 
                               UKCLAG,  | 
                                                                                        1991 | 
| Effects of nitrogen loading on wetland ecosystems, with particular reference to atmospheric deposition | 
                               Morris, J.T…  | 
                                                                                        1991 | 
| Acid deposition: its nature and impacts | 
                               Last, F.T…  | 
                                                                                        1991 | 
| 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 | 
| Acidic deposition: its nature and impacts | 
                               Last, F.T…  | 
                                                                                        1991 | 
| Acid Rain - Critical and Target Load Maps for the United Kingdom | 
                               Environment…  | 
                                                                                        1991 | 
| The mechanisms of arsenate tolerance in Deschampsia cespitosa (L.) Beauv. and Agrostis capillaris L. Adaptation of the arsenate uptake system | 
                               Meharg, A.…  | 
                                                                                        1991 | 
| The effects of acid deposition on nature conservation in Great Britain | 
                               Ormerod, S.…  | 
                                                                                        1991 | 
| Physiological-effects of long-term exposure to low concentrations of SO2 and NH3 on poplar leaves | 
                               Hove, L.W.A…  | 
                                                                                        1991 |