APIS Bibliography

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1998

Burkhardt J, Sutton MA, Milford C, Storeton-West RL, Fowler D. Ammonia concentrations at a site in southern Scotland from 2 yr of continuous measurements. Atmospheric Environment . 1998 ;32:325-331.

2005

Solga A, Burkhardt J, Zechmeister HG, Frahm JP. Nitrogen content, 15N natural abundance and biomass of the two pleurocarpous mosses Pleurozium schreberi (Brid.) Mitt.and Scleropodium purum (Hedw.) Limpr. in relation to atmospheric nitrogen deposition. Environmental Pollution. 2005 ;134:465-473.