1989
“Local Knowledge For Agroforestry And Native Plants”. In Farmer First: Farmer Innovation And Agricultural Research, 14-24. London: Intermediate Technology Publications. http://www.worldcat.org/oclc/20444797.
. 1989. 1987
“Use Of Ethnoecology In Agroforestry Systems Research: An Example Of Af Technology And Pest Management Research In Kenya”. In Paper Presented At Annual Symposium On Farming Systems Research, October 18-21, 1987, University Of Arkansas, Fayetteville. University of Arkansas, Fayetteville.
. 1987.