Title Authors Year
Factors influencing nitrogen saturation in forest ecosystems: Advances in our understanding since the mid 1980s. in the impact of nitrogen deposition on natural and semi-natural ecosystems

Wilson, E.J…

1999
Ranking of epiphytic lichen sensitivity to air pollution using survey data: A comparison of indicator scales

Van Dobben…

1999
Atmospheric deposition of acidifying and eutrophicating substances in dune slacks.

Sival, F.P…

1999
Distribution in Portugal of some pollutants in the lichen Parmelia sulcata

Freitas, M…

1999
The resistance of the moss Polytrichum commune to acute exposure of simulated acid rain or ozone compared to two fern species: Spore germination

Bosley, A…

1999
Protocol to abate acidification, eutrophication and ground-level ozone.

UNECE, .…

1999
Inventory of information sources on chemicals Persistent Organic Pollutants

UNEP,

 		1999
Chemistry of Atmospheres

Wayne, R.P…

1999
Do acid rain and calcium supply limit eggshell formation for blue tits (Parus caeruleus) in the UK?

Ramsay, S.L…

1999
Mapping of ammonia pollution with epiphytic lichens in the Netherlands

Van Herk, C…

1999