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High estimate of world population of Hippopotamus (148,000 individuals) is 2 x Pop. of Dominica (74,000)
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Other land in Mali (2011) (690,000 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.