1. Alvim, P. de T.: 1980, “A perspective appraisal of perennial crops in the Amazon Basin.” Paper presented at International Conference on Amazon Agricultural and Land Use Development, Cali, Colombia, April 16–18, 1980.
2. American Association for the Advancement of Science: 1980, “Environmental and societal effects of a possible CO2-induced climate change: A research agenda, Volume I.” Rept. DOE/EV/ 10019–01. U.S. Dept. of Energy, Washington, D.C.
3. Chang, J-h.: 1980, Some aspects of climatology in southeast Asia and New Guinea. Geo Journal 4, pp. 437–445.
4. Dickinson, J.C. III: 1972, Alternatives to monoculture in the humid tropics of Latin America. Professional Geographer 24, pp. 217–222.
5. Ewel, J.: 1980, Tropical succession: Manifold routes to maturity. Biotropica 12 (Supp.), pp. 2–7.