Onderzoek vijfdaagse schoolweek 1963 /
| Institution: | International Institute of Social History |
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| Format: | TEXT |
| Published: |
NOV,
1963.
Amsterdam : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/C48BF542-077D-4228-A8C4-6DABD18148DF |
| Published: | 1963. |
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