Tähtitiede, avaruustutkimus
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- Milič Čapek : The Concepts of space and time - their structure and their development47,00 €Alennettu hinta 37,50 €
- Jim Lewis : Astro-Carto-Graphe et Astro-Localisation : Vivez votre theme a l'echelle mondiale95,00 €Alennettu hinta 57,00 €