materialsscienceandengineering:
Terbium has no known biological role and its compounds are considered to have low to moderate toxicity.
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Космический трэк пространственных событий Тайны Мира, НЛО пришельцы, наука, космос, древние, мегалиты, археология.
materialsscienceandengineering:
Terbium has no known biological role and its compounds are considered to have low to moderate toxicity.
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