search query: @supervisor Aaltio, Erkki / total: 11
references: 9-11 / 11
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| title | year | author | ||
| 9. | 1962 | Piekkari, Matti |
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| 10. | 1961 | Kivistö, Kauko |
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| 11. | 1955 | Lindfors, Gunnar Göran |
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