Jahresbericht 1997 Corporate author Landesumweltamt Nordrhein-Westfalen Date 1998 Source IUCN (ID: MON-062979) Publisher | Place of publication Landesumweltamt Nordrhein-Westfalen | Essen, Germany ISBN ISSN 0948-079X Pages 192 p. Document type Governmental document Language German Country/Territory Germany Subject Environment gen. Keyword Comprehensive description Local government