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Bobbink R, Roelofs JGM, Hornung (E)M, Sutton (E)MA, Wilson [E]RB. Mapping and modelling of critical loads for nitrogen - a workshop report. Bush: Institute of Terrestrial Ecology; 1995 pp. 9-19.

Hornung M, Sutton MA, Wilson [E]RB. Mapping and modelling of critical loads for nitrogen - a workshop report. Cumbria, UK: Institute of Terrestrial Ecology, Edinburgh, UK.; 1995.

Hornung (E)M, Sutton (E)MA, Wilson [E]RB. Mapping and modelling of critical loads for nitrogen - a workshop report. . Edinburgh: Institute of Terrestrial Ecology; 1995.