Donath, B.2007-11-131999-02-232007-11-131974http://hdl.handle.net/10625/22740French version available in IDRC Digital Library: Sort des fermiers s'améliore peu à peuSpanish version available in IDRC Digital Library: Mejoran las condiciones de los pequeños agricultoresp. 25-28enSMALLHOLDERSFARMING SYSTEMSON-FARM RESEARCHAGRICULTURAL PROJECTSLATIN AMERICACOLOMBIAJournal Article