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The relative abundance of the dominance class (a) and order (b) of bacteria in soil with a difference between proportions ≥1%. C—non-polluted and non-sown soil, Dg—non-polluted soil sown with Dactylis glomerata, DO—non-sown soil polluted with diesel oil, DgDO—soil polluted with diesel oil and sown with Dactylis glomerata.
