Current Data About
Category:April 1957 events
| (P31) |
(Q4167836)
|
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| (P301) |
(Q13080415)
|
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| (P373) |
April 1957
|
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| (P971) |
(Q13080415)
(Q1190554) (Q118) |
other details
| description | Wikimedia category |