18e N.B.A.S.-congres :
| Institution: | International Institute of Social History |
|---|---|
| Format: | TEXT |
| Published: |
NBAS,
1938.
[S.l.] : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/C7BC6CD2-4240-430A-925D-B359B0B9E91C |
| Published: | 1938. |
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