| Title | Authors | Year | 
|---|---|---|
| Direct damage to vegetation caused by acid rain and polluted cloud: definition of critical levels for forest trees. | Cape, J.N… | 1993 | 
| The Effect of pH on Feeding-Behaviour in Newt Larvae (Triturus, Amphibia). | Griffiths,… | 1993 | 
| The exchange of ammonia between the atmosphere and plant communities. | Sutton, M.A… | 1993 | 
| Estimating the relative contribution of SOx, NOx and NHx inputs to effects of atmospheric deposition | Sutton, M.A… | 1993 | 
| The effects of dust on vegetation - a review | Farmer, A.M… | 1993 | 
| Atmospheric deposition of sulphur and nitrogen in heathland ecosystems. | Bobbink, R… | 1993 | 
| The Deposition of Atmospheric Ammonia and Its Effects on Plants | Pearson, J… | 1993 | 
| Diet and Habitat Use of the Dotterel Charadrius-Morinellus in Scotland | Galbraith,… | 1993 | 
| Critical Loads: Concepts and Applications | Harriman, R… | 1993 | 
| Nitrogen eutrophication and critical load for nitrogen based upon changes in flora and fauna in (semi)-natural terrestrial ecosystems | Bobbink, R… | 1993 |