| Title | Authors | Year |
|---|---|---|
| National Recommended Water Quality Criteria |
EPA, US |
1998 |
| The nitrogen content of upland rivers in Britain: the significance of organic N |
Chapman, P.… |
1998 |
| Modelling the spatial distribution of ammonia emissions in the UK |
Dragosits,… |
1998 |
| Denitrification and nitrous oxide concentration in the Humber Estuary, UK, and Adjacent Coastal zones |
Barnes, J… |
1998 |
| Environmental effects of ozone depletion: 1998 assessment |
UNEP, |
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 |
| River Habitat Quality |
Service,… |
1998 |
| Natural abundance of 15N in forests across a nitrogen deposition gradient |
Emmett, B.A… |
1998 |
| Effects of experimental acidification and liming on terrestrial invertebrates: implications for calcium availability to vertebrates |
Ormerod, S.… |
1998 |