' Berliner Erklärung ' - eine globale Initiative zur Förderung eines nachhaltigen Tourismus Corporate author Bundesumweltministerium Date 1997 Source IUCN (ID: MON-066659) Publisher | Place of publication Bundesumweltministerium | Berlin, Germany ISBN II 3 - 45032/7 Pages 5 p. Document type Governmental document Language English, German Country/Territory Germany Subject Environment gen. Keyword Tourism Abstract Also includes the original declaration (in English)