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

Billett, M.…

1990
Seasonal changes in amino acids, protein and total nitrogen in needles of fertilised Scots pine trees

Näsholm, T…

1990
Cation-exchange properties and adaptation to soil acidity in bryophytes

Buscher, P…

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
Indigenous and cultivated plants as bioindicators

Weinstein,…

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