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Countryball Elements: Part 4 - Cesium, Barium and the Lanthanides
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Three things:
1. This is the very last part with the title "Countryball Elements".
2. Three videos in three consecutive days?!?! O.O
3. Happy 150th birthday, Periodic Table!
1. This is the very last part with the title "Countryball Elements".
2. Three videos in three consecutive days?!?! O.O
3. Happy 150th birthday, Periodic Table!
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