Pricing recreation use of national parks for more efficientt nature conservation: An application to the Portuguese case Author Mendes I. Journal/Series European Environment | Vol. 13(5); 288 - 302; 15 p. Date 2003 Source IUCN (ID: ANA-070891) Publisher | Place of publication European Research Press, Ltd. | Shipley, UK Document type Article in periodical Language English Country/Territory Portugal Subject Wild species & ecosystems Keyword National parks Protected area