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Mass of Tuba (10 kg) is 2.5 x Mass of a regulation womens' shot (in the shot put athletics event) (4 kg)
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Land used for agriculture in Andorra (2014) (208.1 km^2)
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.