World Heritage Natural Sites Corporate author IUCN Date 1978 Source IUCN (ID: MON-092390) Title (French) Sites naturels du Patrimoine mondial Title (Spanish) Sitios naturales del Patrimonio Mundial Reference number GA 1978 RES 017 (14.17) Publisher | Place of publication IUCN | Gland, Switzerland Document type Soft law - Decision/resolution Conference name | place | date IUCN General Assembly | Ashkhabad, USSR | 19780926-19781005 Language English, French, Spanish Field of application International Subject Wild species & ecosystems Keyword Protected area International agreement-implementation Full text GA_14_RES_017_World_Heritage_Natural_Sites.pdf GA_14_FR 17.pdf GA_14_ES 17.pdf Website portals.iucn.org