search query: @keyword PSA / total: 21
references: 20-21 / 21
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title | year | author | ||
20. | 2002 | Kupila, Jukka |
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21. | 2002 | Kupila, Jukka |
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INSSI
title | year | author | ||
20. | 2002 | Kupila, Jukka |
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21. | 2002 | Kupila, Jukka |