IUCN Commission on National Parks and Protected Areas. Working Session

• Conservando el patrimonio natural de la región neotropical
• Conservar el patrimonio natural de America Latina y del Caribe
• Conservar el patrimonio natural de América Latina y del Caribe
• Conserving Asia's natural heritage
• Proceedings of the twenty-second Working Session, Commission on National Parks and Protected Areas, Victoria Falls, Zimbabwe, 22-27 May 1983