search query: @keyword Global positioning system / total: 3
references: 2-3 / 3
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title | year | author | ||
2. | 2004 | Gröhn, Antti |
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3. | 1996 | Eerola, Päivi |
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title | year | author | ||
2. | 2004 | Gröhn, Antti |
||
3. | 1996 | Eerola, Päivi |