Title Authors Year
Distribution in Portugal of some pollutants in the lichen Parmelia sulcata

Freitas, M…

1999
Nitrogen deposition makes a minor contribution to carbon sequestration in temperate forests.

Nadelhoffer…

1999
Environmental chemistry: End of acid reign?

Jenkins, A…

1999
Undergrowth as a biomonitor for deposition of N and acidity in pine forest.

Van Dobben…

1999
The effect of increased deposition of atmospheric N on Cv in upland Britain.

Carroll, J.…

1999
Persistent organic pollutants (POPS); state of the science

Jones, K.C…

1999
Inventory of information sources on chemicals Persistent Organic Pollutants

UNEP,

 		1999
Ellenberg's indicator values for British plants: ECOFACT volume 2 technical annex.

Hill, M.O…

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

Van Dobben…

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

Ramsay, S.L…

1999