Home Publications & Data Journal Article Participatory natural resource management in watersheds: Concepts, issues and challenges for research author(s) Johnson, Nancy L. published in2002 regions Colombia original file download full citation Johnson, Nancy L.; Knox, Anna. 2002. Participatory natural resource management in watersheds: Concepts, issues and challenges for research. Annals of Arid Zone (India). 40(3):1-20. (2002).