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Matthews, E. 1983: Global vegetation and land use: new high-resolution data bases for climate studies. Journal of Climate and Applied Meterology 22, 474-87.

Prentice, I.C. , Cramer, W. , Harrison, S.P. , Leemans, R. , Monserud, R.A. and Solomon, A.M. 1992: A global biome model based on plant physiology and dominance, soil properties and climate. Journal of Biogeography 19, 117-34.

Schultz, J. 1995: The ecozones of the world: the ecological divisions of the geosphere. Hamburg: Springer .

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