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Event table notes
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| Event data |
| Place: Helsinki |
| Start date: 23 Feb. 1931 |
| End date: 23 Mar. 1931 |
|
| |
| References |
| Periodicals |
| [HeSa], 5 Apr. 1931, page 19 |
| [Huf], 25 Feb. 1931, page 8 |
| [Huf], 28 Mar. 1931, page 9 |
| [SuSD], no. 85, 28 Mar. 1931, page 6 |
| [TFS], vol. 48, no. 5, May 1942, page 116 |
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