search query: @keyword ISDN / total: 54
references: 50-54 / 54
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title | year | author | ||
50. | 1986 | Castrén, Juhana |
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51. | 1986 | Reini, Matti |
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52. | 1986 | Karpakka, Jari |
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53. | 1986 | Oksanen, Toni |
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54. | 1985 | Aula, Jukka |
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