1988
“Agroecology And In Situ Conservation Of Native Crop Diversity In The Third World”. In Biodiversity, 361-369. Washington, DC: National Academy of Sciences. https://doi.org/10.17226/989.
. 1988. “Tropical Dry Forests: The Most Endangered Major Tropical Ecosystem”. In Biodiversity, 130-137. Washington, DC: National Academy Press. http://www.nap.edu/openbook.php?record_id=989&page=130.
. 1988.