1. Thirty-second World Health Assembly. Formulating Strategies for Health for All by the Year 2000. A32/8.
2. Alternative Approaches to Meeting Basic Health Needs in Developing Countries;Djukanovic,1976
3. Fertility regulating agents from plants;Svejarto;Bulletin of WHO,1978
4. Inventory of Medicinal Plants and Compilation of a List of the Most Widely Used Plants;Penso,1978