| Title | Authors | Year | 
|---|---|---|
| Zinc Phytotoxicity | 
                               Chaney, R.…  | 
                                                                                        1993 | 
| Direct damage to vegetation caused by acid rain and polluted cloud: definition of critical levels for forest trees. | 
                               Cape, J.N…  | 
                                                                                        1993 | 
| The exchange of ammonia between the atmosphere and plant communities. | 
                               Sutton, M.A…  | 
                                                                                        1993 | 
| How Britain hides its acid soil | 
                               Pearce, F…  | 
                                                                                        1993 | 
| The Effect of pH on Feeding-Behaviour in Newt Larvae (Triturus, Amphibia). | 
                               Griffiths,…  | 
                                                                                        1993 | 
| The effects of dust on vegetation - a review | 
                               Farmer, A.M…  | 
                                                                                        1993 | 
| Estimating the relative contribution of SOx, NOx and NHx inputs to effects of atmospheric deposition | 
                               Sutton, M.A…  | 
                                                                                        1993 | 
| Stratospheric Aerosol Optical Depths, 1850-1990. | 
                               Sato, M. ;…  | 
                                                                                        1993 | 
| Air Pollution and Tree Health in the United Kingdom | 
                               DOE, .  | 
                                                                                        1993 | 
| Atmospheric deposition of sulphur and nitrogen in heathland ecosystems. | 
                               Bobbink, R…  | 
                                                                                        1993 |