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   _____   _    _     _____      ___      ______  
  / ___// | || | ||  /  ___||   / _ \\   /_   _// 
  \___ \\ | || | || | // __    | / \ ||  `-| |,-  
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 /____//   \____//   \____//    \___//     |_||   
`-----`     `---`     `---`     `---`      `-`'

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Text this: Natural radioactivity and external dose assessment of surface soils in Bolikhamxay province, Laos