Antzeko izenburuak: Resoluciones y recomendaciones /
- Major conservation issues of the 1990s: resuls of the World Conservation Congress Workshops, Montreal, Canada, 13-23 october 1996 /
- Eleventh Technical Meeting: papers and proceedings, New Delhi, India, 25 to 28 november 1969 = Onz ieme Reunion Technique : rapports et proces-verbaux, New Delhi, India, 25 to 28 november 1969 /
- Informe de la XIX sesión de la Asamblea General
- Informe de la XVIII sesión de la Asamblea General /
- Apoyo en el manejo sostenible del Área Natural Protegida (ANP) Isla Los Pájaros, Suchitoto
- Rapport sur la Conference pour la Protection Internationale de la Nature = Report on the Conference puur la Protection Internationale de la Nature = Report on the conference for the Internation Protection of Nature /
Gaia: CONSERVACION DE LA NATURALEZA-CONGRESOS
- Major conservation issues of the 1990s: resuls of the World Conservation Congress Workshops, Montreal, Canada, 13-23 october 1996 /
- Resoluciones y recomendaciones /
- Eleventh Technical Meeting: papers and proceedings, New Delhi, India, 25 to 28 november 1969 = Onz ieme Reunion Technique : rapports et proces-verbaux, New Delhi, India, 25 to 28 november 1969 /
Gaia: RECURSOS NATURALES-CONSERVACION
- Major conservation issues of the 1990s: resuls of the World Conservation Congress Workshops, Montreal, Canada, 13-23 october 1996 /
- Conciencia social y medio ambiente. Conferencias Reith de 1969 en Londres /
- Los Sistemas ecológicos y la humanidad /
- The law of the mother: protecting indigenous peoples in protected areas
- Resoluciones y recomendaciones /
- Sustaining tomorrow: a strategy for world conservation and development /