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[Preprint]. 2023 Oct 12:rs.3.rs-3414584. [Version 1] doi: 10.21203/rs.3.rs-3414584/v1

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Figure 4. — Bar plots and of mean elemental Arizona garden and yard soil concentrations in by method. The error line in the figure represents the standard deviation. A Tukey’s HSD post-hoc test for a two-factor ANOVA was used; bars with the different letters indicate a significant difference.