| Title | Authors | Year |
|---|---|---|
| Physiological-effects of long-term exposure to low concentrations of SO2 and NH3 on poplar leaves |
Hove, L.W.A… |
1991 |
| The yield of winter cereals exposed to sulphur dioxide under field conditions. |
McLeod, A.R… |
1991 |
| Comparisons of 3 Woodland Sites in NW Britain Differing in Richness of the Epiphytic Lobarion-Pulmonariae Community and Levels of Wet Acidic Deposition |
Farmer, A.M… |
1991 |
| The Distribution and Breeding Site Characteristics of Newts in Cumbria, England. |
Denton, J.S… |
1991 |
| Decline of ectomycorrhizal fungi in Europe. |
Arnolds, E… |
1991 |
| Nitrate in soil water |
Westling, O… |
1991 |
| Proceedings of the 2nd workshop on sources of variation in ecotoxicological tests with Daphnia magna |
Van der… |
1991 |
| Nitrogen Uptake and Allocation by Calluna-Vulgaris (L) Hull and Deschampsia-Flexuosa (L) Trin Exposed to 15NH3 |
Dueck, T.A… |
1991 |
| Air pollution and agriculture |
Ashmore, M.… |
1991 |
| Acid rain since 1985 - times are changing |
Brydges, T.… |
1991 |