European Forest Institute
![European Forest Institute](https://upload.wikimedia.org/wikipedia/commons/8/8d/EFI-logo_black.png)
1
Published: [2003]
Superior document: European Forest Institute research report ; 16
2
Published: 2002.
Superior document: European Forest Institute research report ; 13
3
Published: [2005]
Superior document: European Forest Institute research report ; 19