1. In situ conservation of crop genetic resources through maintenance of traditional farming systems;Altieri;Economic Botany,1987
2. Diversity compensation systems: ways to compensate developing nations for providing genetic materials;Barton,1988
3. PhD dissertation;Bellon Corrales,1990
4. Protecting Intellectual Property Rights: Issues and Controversies;Benko,1987
5. Principles of Tzeltal Plant Classification: An Introduction to Botanical Ethnography of a Mayan-Speaking Community in Highland Chiapas;Berlin,1974