| Title | Authors | Year |
|---|---|---|
| Nitrate in soil water |
Westling, O… |
1991 |
| Acid rain since 1985 - times are changing |
Brydges, T.… |
1991 |
| Environmental Health Criteria 125 Platinum |
WHO, |
1991 |
| Zeigerwerte von Pflanzen in Mitteleuropa |
Ellenberg,… |
1991 |
| Atmospheric Transport of Iron and Its Deposition in the Ocean |
Duce, R. A… |
1991 |
| Effects of ionising radiation on aquatic organisms |
National… |
1991 |
| Physiological-effects of long-term exposure to low concentrations of SO2 and NH3 on poplar leaves |
Hove, L.W.A… |
1991 |
| Nitrogen Uptake and Allocation by Calluna-Vulgaris (L) Hull and Deschampsia-Flexuosa (L) Trin Exposed to 15NH3 |
Dueck, T.A… |
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 |