1998
1993
“Indigenous Knowledge And Drought In The Arid Zone Of Rajasthan [India]: Weather Prediction As A Means To Cope With A Hazardous Climate”. 1993 Internationale Reihe Nr. 93/3. Zürich: Zurich Departement Wald-Und Holzforschung.
. 1993. 1989
“Agricultural Systems On The Floodplains Of The Peruvian Amazon”. In Fragile Lands Of Latin America: Strategies For Sustainable Development, 75-100. Boulder, CO: Westview Press. http://www.worldcat.org/oclc/18351601.
. 1989. “Indigenous Soil Management In The Amazon Basin: Some Implications For Development”. In Fragile Lands Of Latin America: Strategies For Sustainable Development, 166-181. Boulder, CO: Westview Press. http://www.worldcat.org/oclc/18351601.
. 1989. 1983
“Developing Sustainable Agroecosystems”. Bioscience 33 (1): 45-49. doi:10.2307/1309244. http://bioscience.oxfordjournals.org/content/33/1/45.
. 1983.