| Title | Authors | Year |
|---|---|---|
| UNECE Critical Levels Workshop Proceedings |
Guderian, R… |
1998 |
| Impacts of nitrogen on Sphagnum dominated bogs with emphasis on critical load assessment |
Risager, M… |
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 |
| Boron, zinc iron and managanese content in four grassland species |
Adarve, M.… |
1998 |
| The phytoavailability of cadmium to lettuce in long-term biosolids-amended soils |
Brown, S. L… |
1998 |
| River Habitat Quality |
Service,… |
1998 |
| Effects of ammonia deposition on forests in the Netherlands |
Van der… |
1998 |
| Unintentional experiments with terrestrial ecosystems: ecological effects of sulphur and nitrogen pollutants |
Lee, J.A.… |
1998 |
| Effects of carbon dioxide and nitrogen enrichment on a plantinsect interaction: the quality of Calluna vulgaris as a host for Operophtera brumata |
Kerslake, J… |
1998 |