Title Authors Year
The yield of winter cereals exposed to sulphur dioxide under field conditions.

McLeod, A.R…

1991
Forestry and soil protection in the UK

Moffatt, A.…

1991
Increases in soil acidity in north west Wales between 1957 and 1990

…

1991
Nitrate in soil water

Westling, O…

1991
Single and Interactive Effects of Low Levels of O3, SO2 and NO2 on the Growth and Yield of Spring Rape.

Adaros, G…

1991
Changes in species composition of semi-natural vegetation associated with the increase in atmospheric inputs of nitrogen

Pitcairn, C…

1991
Critical Load Maps for the United Kingdom I: Soil

UKCLAG,

 		1991
Seasonal variations in acidic pollutant inputs and their effects on the chemistry of stemflow, bark and epiphyte tissues in three oak woodlands in N.W. Britain

Farmer, A.M…

1991
Air pollution and agriculture

Ashmore, M.…

1991
Nitrogen Uptake and Allocation by Calluna-Vulgaris (L) Hull and Deschampsia-Flexuosa (L) Trin Exposed to 15NH3

Dueck, T.A…

1991