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. 2020 Sep 2;164:105146. doi: 10.1016/j.resconrec.2020.105146

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Fig. 5 — Trends of (a) the number of views, (b) the number of likes and (c) the ratio of annual waste management related posts in total annual posts from 2015 to 2019. The five lines on a boxplot denote five percentiles, and the notation ' × ' denotes an annual mean.