| Title | Authors | Year |
|---|---|---|
| Forest soil chemical changes between 1949-50 and 1987 |
Billett, M.… |
1990 |
| Successional changes in the soft-water macrophyte vegetation of (sub)atlantic, sandy, lowland regions during this century |
Arts, G.H.P… |
1990 |
| Air pollution and tree-dwelling aphids. Population Dynamics of Forest Insects |
McNeill, S… |
1990 |
| Cation-exchange properties and adaptation to soil acidity in bryophytes |
Buscher, P… |
1990 |
| Environmental Health Criteria 86 Mercury- Environmental Aspects |
WHO, |
1989 |
| Water and the Environment. Circular 7/89 |
Department… |
1989 |
| Results of the harmful effects of water pollutants to Daphnia magna in the 21 day Reproduction Test |
Kühn, R ;… |
1989 |
| Effects of ammonia emission on epiphytic lichen vegetation |
DeBakker, A… |
1989 |
| Manganese induced haematological and biochemical anomalies in Heteropneustes fossilis |
Garg, V. K… |
1989 |
| Unifying nutrient-chlorophyll relationships in lakes. |
Prairie, Y.… |
1989 |