Sustainable tourism (Series of articles) Corporate author United Nations Population Fund (UNFPA)/ IUCN / International Planned Parenthood Federation (IPPF)/ WWF Sida Date 1997 Source IUCN (ID: MON-062043) Publisher | Place of publication Planet 21 | London, UK Pages 35 p. Document type Article in periodical Language English Field of application International Subject Environment gen. Keyword Tourism