search query: @supervisor Vähäkallio, Pentti / total: 52
references: 49-52 / 52
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title | year | author | ||
49. | 1975 | Petrow, Seppo Tapani |
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50. | 1973 | Vikström, Christer |
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51. | 1972 | Nakari, Pentti |
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52. | 1969 | Vikström, Christer |
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