European seminar on the principles and practice of groupwork :
| Institution: | International Institute of Social History |
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| Format: | TEXT |
| Published: |
Geneva,
1956.
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/32CA0C5A-6960-4714-9914-6C2913376B70 |
| Published: | 1956. |
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