Title Authors Year
Effects of experimental acidification, nitrogen addition and liming on ground vegetation in a mature stand of Norway spruce (Picea abies (L.) Karst.) in SE Sweden

Hallbdcken…

1998
UNECE Critical Levels Workshop Proceedings

Guderian, R…

1998
Modelling the spatial distribution of ammonia emissions in the UK

Dragosits,…

1998
The effect of air pollution from nitrogen dioxide (NO2) on epiphytic lichens in Seville, Spain.

Funetes, J.…

1998
Differential effects of ammonium nitrate on three heathland species

De Graaf, M…

1998
Effects of atmospheric NH3 on epiphytic lichens in the Netherlands: The pitfalls of biological monitoring

Dobben, H.F…

1998
Dispersion, deposition and impacts of atmospheric ammonia: quantifying local budgets and spatial variability

Sutton, M.A…

1998
Effects of grass-encroachment on vegetation and soil in Dutch dry dune grasslands

Veer, M.A.C…

1998
Environmental effects of ozone depletion: 1998 assessment

UNEP,

 		1998
Impacts of nitrogen on Sphagnum dominated bogs with emphasis on critical load assessment

Risager, M…

1998