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D01 Inorganic Chemicals D007287 +
D01.268 Elements D004602 +
D01.268.552 Metals, Alkaline Earth D008673 +
D01.268.552.050 Barium D001464
D01 Inorganic Chemicals D007287 +
D01.268 Elements D004602 +
D01.268.556 Metals, Heavy D019216 +
D01.268.556.062 Barium D001464
D01 Inorganic Chemicals D007287 +
D01.552 Metals D008670 +
D01.552.539 Metals, Alkaline Earth D008673 +
D01.552.539.124 Barium D001464
D01 Inorganic Chemicals D007287 +
D01.552 Metals D008670 +
D01.552.544 Metals, Heavy D019216 +
D01.552.544.062 Barium D001464