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Heikki Oja

About

Heikki Oja is a Finnish docent of astronomy, Doctor of Philosophy and the former director of the almanac office of the University of Helsinki.

Books

Universumi.
Universumi.
Heikki Oja
Storm Dunlop, Heikki Oja, Markus Hotakainen
Harrastajan tähtitiedettä
Harrastajan tähtitiedettä
Storm Dunlop, Heikki Oja, Markus Hotakainen
Fundamental Astronomy
Fundamental Astronomy
Hannu Karttunen, Karl Johan Donner, Heikki Oja, Pekka Kröger, Markku Poutanen
Fundamental Astronomy
Fundamental Astronomy
Hannu Karttunen, Karl Johan Donner, Heikki Oja, Pekka Kröger, Markku Poutanen

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