| Title | Authors | Year |
|---|---|---|
| Factors influencing nitrogen saturation in forest ecosystems: Advances in our understanding since the mid 1980s. in the impact of nitrogen deposition on natural and semi-natural ecosystems |
Wilson, E.J… |
1999 |
| Action for Scotland's Biodiversity |
Usher, (Eds… |
1999 |
| Atmospheric deposition of acidifying and eutrophicating substances in dune slacks. |
Sival, F.P… |
1999 |
| Mapping of ammonia pollution with epiphytic lichens in the Netherlands |
Van Herk, C… |
1999 |
| Indicators of climate change in the UK |
Cannell, M.… |
1999 |
| Distribution in Portugal of some pollutants in the lichen Parmelia sulcata |
Freitas, M… |
1999 |
| Environmental Health Criteria 200 Copper |
WHO, |
1998 |
| Boron, zinc iron and managanese content in four grassland species |
Adarve, M.… |
1998 |
| National Monitoring Programme - Survey of the Quality of UK Coastal Waters |
Group,… |
1998 |
| River Habitat Quality |
Service,… |
1998 |