| Title | Authors | Year | 
|---|---|---|
| Estimating the uptake of traffic-derived NO2 from N-15 abundance in Norway spruce needles | 
                               Ammann, M…  | 
                                                                                        1999 | 
| Undergrowth as a biomonitor for deposition of N and acidity in pine forest. | 
                               Van Dobben…  | 
                                                                                        1999 | 
| Distribution in Portugal of some pollutants in the lichen Parmelia sulcata | 
                               Freitas, M…  | 
                                                                                        1999 | 
| The Kyoto Protocol: A guide and assessment | 
                               Grubb, M.;…  | 
                                                                                        1999 | 
| Environmental chemistry: End of acid reign? | 
                               Jenkins, A…  | 
                                                                                        1999 | 
| The fate of NH4NO3 added to Sphagnum magellanicum carpets at five European mire sites | 
                               Williams, B…  | 
                                                                                        1999 | 
| Boron, zinc iron and managanese content in four grassland species | 
                               Adarve, M.…  | 
                                                                                        1998 | 
| Natural abundance of 15N in forests across a nitrogen deposition gradient | 
                               Emmett, B.A…  | 
                                                                                        1998 | 
| Ammonia concentrations at a site in southern Scotland from 2 yr of continuous measurements | 
                               Burkhardt,…  | 
                                                                                        1998 | 
| Significance of soil properties for content and distribution of cadmium and lead in natural calcareous soils | 
                               Sanchez-…  | 
                                                                                        1998 |