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

Billett, M.…

1990
The difficulties of abating smoke in Late Victorian York

Bowler, C…

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

McNeill, S…

1990
Effects of ammonia, ammonium sulphate and sulphur dioxide on the frost sensitivity of Scots pine (Pinus sylvestris L.)

Dueck, T.A…

1990
Environmental Health Criteria 86 Mercury- Environmental Aspects

WHO,

 		1989
Long-term change in the suitability of welsh streams for dippers Cinclus cinclus as a result of acidification and recovery: A modelling study.

Ormerod, S.…

1989
Lichen Recolonization in London under Conditions of Rapidly Falling Sulfur-Dioxide Levels, and the Concept of Zone Skipping.

Hawksworth…

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

HMSO,

 		1989
Indigenous and cultivated plants as bioindicators

Weinstein,…

1989
Water and the Environment. Circular 7/89

Department…

1989