| Title | Authors | Year |
|---|---|---|
| Forest soil chemical changes between 1949-50 and 1987 |
Billett, M.… |
1990 |
| The variation in the acidity of ground and surface waters in Northern Ireland |
Jordan, C… |
1990 |
| Cation-exchange properties and adaptation to soil acidity in bryophytes |
Buscher, P… |
1990 |
| Air pollution and tree-dwelling aphids. Population Dynamics of Forest Insects |
McNeill, S… |
1990 |
| Water and the Environment. Circular 7/89 |
Department… |
1989 |
| Surface Waters (Dangerous Substances) (Classification) Regulations No 2286 |
HMSO, |
1989 |
| Environmental Health Criteria 86 Mercury- Environmental Aspects |
WHO, |
1989 |
| The comparative chemistries of platinum group metals and their periodic neighbors in marine macrophytes |
Yang, J. S… |
1989 |
| Statutory Instrument (1989): The Sludge (Use in Agriculture) Regulations |
HMSO, |
1989 |
| Deposition of atmospheric pollutants on forests |
Fowler, D… |
1989 |