Title Authors Year
Phosphorus and nitrogen limitation of phytoplankton growth in the freshwaters of North America: a review and critique of experimental enrichments

Elser, J.J…

1990
Forest soil chemical changes between 1949-50 and 1987

Billett, M.…

1990
Alger, lavar och Garrupprattning hos unggranar langs en kvavegradient Sverige-Holland

Garansson,…

1990
On the use of mosses (Hylocomium splendens and Pleurozium schreberi) for estimating atmospheric trace metal deposition

Ross, H.B…

1990
Surface Waters (Dangerous Substances) (Classification) Regulations No 2286

HMSO,

 		1989
A regression model for nitrate leaching in Northern Ireland.

Smith, R.V…

1989
Acute toxicity of six metals to the rotifer Brachionus calyciflorus, with comparisons to other freshwater organisms

Couillard,…

1989
The comparative chemistries of platinum group metals and their periodic neighbors in marine macrophytes

Yang, J. S…

1989
Effects of N-emissions on nutrient status and vitality of Pinus sylvestris near a hen house.

…

1989
A global assessment of natural sources of atmospheric trace metals

Nriagu, J.O…

1989