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Yutangba has been known as a typical high-Se area in China since a sudden incidence of human Se poisoning occurred in 1963. The surface exposed Se-rich rocks of the Maokou and Wujiaping Formations were genereally considered to be the main source of Se tha
Yutangba has been known as a typical high-Se area in China since a sudden occurred of human Se poisoning occurred in 1963. The surface exposed Se-rich rocks of the Maokou and Wujiaping Formations were genereally considered to be the main source of Se tha