Planning and managing forestry research : guidelines for managers /

Autor Gregersen, H. M.
Vydáno 1990

Integrated watershed management : connecting people to their land and water /

Autor Gregersen, H. M.
Vydáno 2007

Guidelines for economic appraisal of watershed management projects /

Vydáno 1987

Valuing forests : context, issues and guidelines /

Vydáno 1995