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GDP in Montenegro (2015) (10.32 billion USD p/a) is 4 x GDP in Guinea-Bissau (2017) (2.591 billion USD p/a)
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Mass of Brooklyn Bridge (13.32 million kg)
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.