| Title | Authors | Year | 
|---|---|---|
| Effects of atmospheric nitrogen compounds (particularly nitrogen oxides) on plants. | 
                               WHO,  | 
                                                                                        1997 | 
| Air pollution an introduction | 
                               Colls, J.…  | 
                                                                                        1997 | 
| Human impacts on the nitrogen cycle: A global problem judged from a local perspective | 
                               Hessen, D.O…  | 
                                                                                        1997 | 
| Ecology of dunes, salt marsh and shingle | 
                               Packham, J.…  | 
                                                                                        1997 | 
| Canadian water quality guidelines for chromium | 
                               Pawlisz, A…  | 
                                                                                        1997 | 
| The embarrassment of riches: Atmospheric deposition of nitrogen and community and ecosystem processes. | 
                               Jefferies,…  | 
                                                                                        1997 | 
| The impact of a road upon adjacent heathland vegetation: Effects on plant species composition | 
                               Angold, P.G…  | 
                                                                                        1997 | 
| Emission, concentration and deposition of acidifying substances. | 
                               Erisman, J.…  | 
                                                                                        1997 | 
| Pollution-related variation in food supply and breeding success in two hole-nesting passerines. | 
                               Eeva, T.; E…  | 
                                                                                        1997 | 
| Responses of Norwegian alpine Betula nana community to nitrogen fertilization | 
                               Paal, J.;…  | 
                                                                                        1997 |