| Title | Authors | Year |
|---|---|---|
| Seasonal changes in amino acids, protein and total nitrogen in needles of fertilised Scots pine trees |
Näsholm, T… |
1990 |
| Alger, lavar och Garrupprattning hos unggranar langs en kvavegradient Sverige-Holland |
Garansson,… |
1990 |
| Forest decline, nutrient supply and diagnostic fertilisation in southwestern Germany and in southern California. |
Huettl, R.F… |
1990 |
| Cadmium uptake and toxicity to water hyacinth: effect of repeated exposures under controlled conditions |
Nir, R ;… |
1990 |
| The effect of air quality on tree growth. |
Lee, H.S.J… |
1990 |
| Fine Root Studies in situ and in the Laboratory. |
Wollmer, H… |
1990 |
| Bryophytes and heavy metals: a literature review |
Tyler, G.… |
1990 |
| Phytoavailability and toxicity of beryllium and vanadium |
Kaplan, D… |
1990 |
| Forest soil chemical changes between 1949-50 and 1987 |
Billett, M.… |
1990 |
| The variation in the acidity of ground and surface waters in Northern Ireland |
Jordan, C… |
1990 |