Title Authors Year
Forest soil chemical changes between 1949-50 and 1987

Billett, M.…

1990
Decline of the natterjack toad Bufo clamita in Britain: Paleoecological, documentary and experimental evidence for breeding site acidification

Beebee, T.J…

1990
Air pollution and tree-dwelling aphids. Population Dynamics of Forest Insects

McNeill, S…

1990
Calculated rates of soil acidification of intensively used grassland in the Netherlands.

Oenema, O…

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

HMSO,

 		1989
Water and the Environment. Circular 7/89

Department…

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

…

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
Environmental Health Criteria 85 Lead- Environmental Aspects

WHO,

 		1989