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Five forest fables
by Gunnar Poulsen ; illustrations by Lars...
Bok Engelsk 1992
Environmental aspects of agricultural development assistance
Christiansen, Sofus
Bok Engelsk 1985
Man and tree in tropical Africa : three essays on the role of trees in the African environment
Gunnar Poulsen
Bok Engelsk 1978
CADU forestry activities
by Gunnar Poulsen
Bok Engelsk 1973