| Title | Authors | Year | 
|---|---|---|
| Effects of grass-encroachment on vegetation and soil in Dutch dry dune grasslands | Veer, M.A.C… | 1998 | 
| Environmental effects of ozone depletion: 1998 assessment | UNEP, | 1998 | 
| A review of boron effects in the environment | Howe, P. D… | 1998 | 
| Assessment of Cd, Pb and Zn contamination in roadside soils and grasses from Gipuzkoa (Spain) | Garcia, R… | 1998 | 
| Studies on the egg quality of the Great Tit (Parus major) in relation to soil-condition. | Weimer, V… | 1998 | 
| Air pollution fades the plumage of the Great Tit | Eeva, T.; E… | 1998 | 
| The phytoavailability of cadmium to lettuce in long-term biosolids-amended soils | Brown, S. L… | 1998 | 
| Effects of ammonia deposition on forests in the Netherlands | Van der… | 1998 | 
| Iron-manganese interactions among clones of nilegrass | Foy, C. D… | 1998 | 
| Potential NH4+ & NO3- uptake in seven Sphagnum species | Jauhiainen… | 1998 |