Relationships between above and below ground influences of air pollutants on forest trees : proceedings of a workshop jointly organized by the Commission of the European Communities and the Research Institute for Forestry and Landscape Planning 'De Dorschkamp', Wageningen, Gennep, The Netherlands ... 1987
edited by J. Bervaes, P. Mathy, P. Evers
Bok Språk ikke angitt 1988