του Αντώνη Παπαθεοδούλου. Διάρκεια: 60′ Από τις 22/04/2021 έως και τις 9/5/2021 μικροί και μεγάλοι θα έχουν την ευκαιρία να... περισσότερα
Τα παγόβουνα έχουν μικρότερη πυκνότητα από το νερό, επομένως επιπλέουν πάντα με περίπου 10% της μάζας τους πάνω από το... περισσότερα
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