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Fluoride poisoning is the most widespread and serious endemic disease in the inland river basins of northern China, where igneous rocks containing F-rich minerals of the Yanshan stage (Jurassic-Cretaceous) are extensively exposed in mountainous area. In I
Fluoride poisoning is the most widespread and serious endemic disease in the inland river basins of northern China, where igneous rocks containing F-rich minerals of the Yanshan stage (Jurassic-Cretaceous) are extensively exposed in mountainous areas. In I