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. Author manuscript; available in PMC: 2018 Oct 28.
Published in final edited form as: Earths Future. 2017 Mar 21;5(6):545–559. doi: 10.1002/2016EF000518

Figure 1.

Figure 1

The number of publications based on the keyword “water scarcity” from Scopus as of 17 January 2016. The years of publication of specific water scarcity indicators are marked.