| Title | Authors | Year | 
|---|---|---|
| Acid deposition: its nature and impacts | 
                               Last, F.T…  | 
                                                                                        1991 | 
| Acidic deposition: its nature and impacts | 
                               Last, F.T…  | 
                                                                                        1991 | 
| Conservation of freshwater fish in the British Isles: the current status and biology of threatened species. Aquatic Conservation | 
                               Maitland, P…  | 
                                                                                        1991 | 
| Critical Load Maps for the United Kingdom I: Soil | 
                               UKCLAG,  | 
                                                                                        1991 | 
| Nitrate in soil water | 
                               Westling, O…  | 
                                                                                        1991 | 
| Effects of sulphur dioxide on the development of fungal diseases of winter barley in an open-air fumigation system. | 
                               Mansfield,…  | 
                                                                                        1991 | 
| Acid Rain - Critical and Target Load Maps for the United Kingdom | 
                               Environment…  | 
                                                                                        1991 | 
| Uptake, accumulation and translocation of arsenate in arsenate-tolerant and non-tolerant Holcus lanatus L. | Meharg, A. A… | 1991 | 
| Environmental Health Criteria 125 Platinum | 
                               WHO,  | 
                                                                                        1991 | 
| Atmospheric Transport of Iron and Its Deposition in the Ocean | 
                               Duce, R. A…  | 
                                                                                        1991 |