Title Authors Year
The effects of air-borne nitrogen pollutants on species diversity in natural and semi-natural European vegetation

Bobbink, R…

1998
Assessment of atmospheric heavy metals by moss monitoring with Isothecium stoloniferum Brid. in the Fraser Valley, B.C., Canada

Pott, U ;…

1998
UNECE Critical Levels Workshop Proceedings

Guderian, R…

1998
Ammonia: emission, atmospheric transport and deposition

Asman, W.A.…

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

Dobben, H.F…

1998
Long-term decline in the thickness of eggshells of thrushes, Turdus spp., in Britain

Green, R.E…

1998
Differential effects of ammonium nitrate on three heathland species

De Graaf, M…

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