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Planning and managing forestry research : guidelines for managers
Gregersen, Hans M. - 1990
Persistent link: https://www.econbiz.de/10013336706
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Valuing forests : context, issues and guidelines
Gregersen, Hans M. (contributor) - 1995
Persistent link: https://www.econbiz.de/10013336717
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Assessing forestry project impacts : issues and strategies
Gregersen, Hans (contributor) - 1993
Persistent link: https://www.econbiz.de/10000417556
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Economic assessment of forestry project impacts
Gregersen, Hans; Contreras, Arnoldo - 1992
Persistent link: https://www.econbiz.de/10000347071