Als de 24-uurstijd ingevoerd wordt
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| Institution: | International Institute of Social History |
| Format: | IMAGE |
| Published: |
1927, 12 maart
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| Online Access: | http://hdl.handle.net/10622/5B3AE573-9A3E-4F67-B304-61066E14F441 |
| Published: | 1927, 12 maart |
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