| Title | Authors | Year |
|---|---|---|
| The variation in the acidity of ground and surface waters in Northern Ireland |
Jordan, C… |
1990 |
| Epiphyte recolonization of oaks along a gradient of air pollution in south-east England, 1979-1990. |
Bates, J.W… |
1990 |
| Air pollution and tree-dwelling aphids. Population Dynamics of Forest Insects |
McNeill, S… |
1990 |
| Eutrophication: assessment, research and management with special reference to Scotland's Freshwaters |
Bailey-… |
1990 |
| Water and the Environment. Circular 7/89 |
Department… |
1989 |
| Manganese induced haematological and biochemical anomalies in Heteropneustes fossilis |
Garg, V. K… |
1989 |
| Lead hazards to fish, wildlife and invertebrates: a synoptic review |
Eisler, R… |
1989 |
| Unifying nutrient-chlorophyll relationships in lakes. |
Prairie, Y.… |
1989 |
| Indigenous and cultivated plants as bioindicators |
Weinstein,… |
1989 |
| Surface Waters (Dangerous Substances) (Classification) Regulations No 2286 |
HMSO, |
1989 |