1931
Il ha 3 modificationes in iste version que attende revision.
Le version stabile ha essite revidite le 8 martio 2013.
| 1931 |
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| instantia de: anno civil[*], common year starting and ending on Thursday[*] |
| parte de: annos 1930, Calendario gregorian |
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| precedite per: 1930 , succedite per: 1932 |
| Commons: 1931 |