1. Aguilar, P. Professor of Zoology, Univ. Agraria la Molina, Lima, Peru.
2. Aschmann, H. Professor of Earth Sciences, Univ. California, Riverside, CA 92521.
3. Becker, R. USDA-Western Regional Research Center, Albany, CA.
4. Bene, J. Senior Advisor, International Development Research Centre, Ottawa, Canada.
5. Charreau, C. Resident Representative for ICRISAT, 28 Rue Thiers, Dakar, Senegal.