Title Authors Year
A global assessment of natural sources of atmospheric trace metals

Nriagu, J.O…

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
Forest decline and Air Pollution

Schulze, E.…

1989
Interacting effects of soil acidity and canopy cover on the species composition of field layer vegetation in oak/hornbeam forests

Tyler, G.…

1989
Surface Waters (Dangerous Substances) (Classification) Regulations No 2286

HMSO,

 		1989
Water and the Environment. Circular 7/89

Department…

1989
Effects of SO2, NO2, and O3 on Population Development and Morphological and Physiological Parameters of Native Herb Layer Species in a Beech Forest.

Steubing, L…

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

Yang, J. S…

1989
Statutory Instrument (1989): The Sludge (Use in Agriculture) Regulations

HMSO,

 		1989