Reservas de biosfera : clarificacion de su marco conceptual y diseño y aplicacion de una metodologia para la planificacion estrategica de un subsistema nacional Author(s) Cifuentes A., Miguel
Proceedings of the symposium on biosphere reserves, September 11-18, 1987, YMCA of the Rockies, Estes Park Center, Estes Park, Colorado, USA Author(s) Gregg, William P. Grugman, Stanley L. Wood, James D., Jr.
Wildlands : their protection and management in economic development Author(s) Goodland, Robert J. A. Ledec, George
Conservation of natural areas and genetic material in Central America Author(s) Holdridge, L. R. (Leslie Rensselaer)
