| Title | Authors | Year |
|---|---|---|
| The effects of air-borne nitrogen pollutants on species diversity in natural and semi-natural European vegetation |
Bobbink, R… |
1998 |
| UNECE Critical Levels Workshop Proceedings |
Guderian, R… |
1998 |
| Nitrogen deposition and its contribution to nitrogen cycling and associated soil processes |
Goulding, K… |
1998 |
| Ecological effects of atmospheric reactive N deposition on semi-natural terrestrial ecosystems. |
Lee, J.A.;… |
1998 |
| Sensitive bioassays for risk assessment of contaminated soils |
Vaughan, G… |
1998 |
| Long-term decline in the thickness of eggshells of thrushes, Turdus spp., in Britain |
Green, R.E… |
1998 |
| River Quality in Northern Ireland 1995 |
Service,… |
1998 |
| Sulphur isotopic investigation of a polluted raised bog and the uptake of pollutant sulphur by Sphagnum |
Thompson, A… |
1998 |
| Effects of grass-encroachment on vegetation and soil in Dutch dry dune grasslands |
Veer, M.A.C… |
1998 |
| Environmental effects of ozone depletion: 1998 assessment |
UNEP, |
1998 |