APIS Bibliography

Title	Authors	Year
Distribution and decline of endangered herbaceous heathland species in relation to the chemical composition of the soil	Houdijk, A.…	1993
Reproduction in two submersed macrophytes declines progressively at low pH.	Titus, J.E…	1993
Effect of acid rain on pine needles as food for capercaillie in winter	Spidsx, T.K…	1993
A new potential air-quality criterion derived from vertical flux densitites of ozone and from plant response	Grunhage, L…	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
Examining the Cr uptake of ryegrass from inorganic compounds and sewage sludge in pot experiements	Loch, J ;…	1993
The Deposition of Atmospheric Ammonia and Its Effects on Plants	Pearson, J…	1993
The influence of nitrogen fertilization on ectomycorrhizas and their fungal corpophores in young stands of Pinus sylvestris	…	1993