Dahkki
- International Development Research Centre (Canada) 6 bohtosa
- ebrary, Inc 6 bohtosa
- Gonsalves, Julian 4 bohtosa
- Filson, Glen C., 1947- 2 bohtosa
- Howeler, R. H. 2 bohtosa
- Lutaladio, NeBambi 2 bohtosa
- National Research Council (U.S.). Committee on Sustainable Agriculture and the Environment in the Humid Tropics 2 bohtosa
- National Research Council (U.S.). Committee on Twenty-First Century Systems Agriculture 2 bohtosa
- Thomas, Graeme 2 bohtosa
- editedGonsalves, Julian 2 bohtosa