Forest condition in Europe: 2005 technical report of ICP Forests - Martin Lorenz; Georg Becher; Volker Mues; Richard Fischer; R. Becker; V. Calatayud; N. Dise; G. H. M. Krause; M. Sanz; E. Ulrich (Federal Research Centre for Forestry and Forest Products (BFH), Institute for World Forestry, 2005)
urn:nbn:de:gbv:253-200912-dk040086-4
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