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Heikki Oja
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Author
Heikki Oja
47 Published Books
Heikki Oja
Popular Books by Heikki Oja
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Maailmankaikkeuden rakenne
By:
Heikki Oja
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Einsteinin perintö - Mitä Albert Einstein ennusti oikein - ja mitä väärin
By:
Heikki Oja
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Universumi.
By:
Heikki Oja
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Riimut. Viestejä viikingeiltä
By:
Heikki Oja
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Eksoplaneetat
By:
Heikki Oja
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Aikakirja
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Heikki Oja
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Jäinen lohikäärme
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Heikki Oja
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Galaksit
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Heikki Oja
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Tähtitieteen sankareita – Newtonista nykypäivään
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Heikki Oja
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Aurinkokunta uusiksi
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Heikki Oja
