| Title | Authors | Year | 
|---|---|---|
| Effects of N-emissions on nutrient status and vitality of Pinus sylvestris near a hen house. | … | 1989 | 
| Hematological Parameters in Fish Channa punctatus Under the Stress of Manganese | Garg, V. K… | 1989 | 
| Global Emissions of Nitrogen and Sulfur-Oxides from 1860 to 1980 | Dignon, J… | 1989 | 
| Effects of ammonia emission on epiphytic lichen vegetation | DeBakker, A… | 1989 | 
| Acid rain and eggshells | Drent, P.J… | 1989 | 
| Interacting effects of soil acidity and canopy cover on the species composition of field layer vegetation in oak/hornbeam forests | Tyler, G.… | 1989 | 
| Forest decline and Air Pollution | Schulze, E.… | 1989 | 
| Environmental Health Criteria 85 Lead- Environmental Aspects | WHO, | 1989 | 
| Acidification and Otter (Lutra lutra) Distribution in Scotland | Mason, C.F… | 1989 | 
| A comparison of plant toxicities of some industrial chemicals in soil culture and soilless culture | Adema, D ;… | 1989 |