Kosmisen säteilyn vaarallisuus, toinen versio

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Average: 3.7 (3 votes)
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matka maan lapi 2

3.666665
Average: 3.7 (3 votes)
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Movement of Heavenly Bodies – Earth and Moon

3.666665
Average: 3.7 (3 votes)
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Variable Stars - The Learning Cycle

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Average: 3.7 (3 votes)
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Ατμοσφαιρική Απορρόφηση

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Average: 3.7 (3 votes)
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Ημερήσια διαδρομή του Ηλίου

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Average: 3.7 (3 votes)
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Πλανητικά συστήματα

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Jordaxelns lutning

3.5
Average: 3.5 (4 votes)
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Bygga och använda ett solur

3.5
Average: 3.5 (2 votes)
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Kartläggning av stjärnorna I ‐ Latitud och vinklar

3.5
Average: 3.5 (2 votes)
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