APIS Bibliography

Title	Authors	Year
Reproduction in two submersed macrophytes declines progressively at low pH.	Titus, J.E…	1993
Urban Air Quality in the United Kingdom. First Report of the Quality of Urban Air Review Group	Group,…	1993
A new potential air-quality criterion derived from vertical flux densitites of ozone and from plant response	Grunhage, L…	1993
Estimating the relative contribution of SOx, NOx and NHx inputs to effects of atmospheric deposition	Sutton, M.A…	1993
Atmospheric deposition of sulphur and nitrogen in heathland ecosystems.	Bobbink, R…	1993
North Sea quality status report 1993	OSPARCOM,…	1993
A survey of the health of Fagus sylvatica in southern Britain.	Ling, K.A…	1993
The effect of external stress and disturbance factors on Calluna dominated heathland vegetation.	Berdowski,…	1993
The Deposition of Atmospheric Ammonia and Its Effects on Plants	Pearson, J…	1993
Nitrogen and phosphorus concentrations and N:P ratios in Norwegian lakes. Perspective on nutrient limitation	Faafeng, B…	1993