The magic triangle :
| Institution: | International Institute of Social History |
|---|---|
| Format: | TEXT |
| Published: |
International Youth Hostel Federation,
1982
[S.l.] : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/7D851617-709D-4E65-819D-BD4AF501A920 |