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  _____      ___      ____     _    _     ____    
 / ____||   / _ \\   |  _ \\  | || | ||  |  _ \\  
/ //---`'  | / \ ||  | |_| || | || | ||  | |_| || 
\ \\___    | \_/ ||  | .  //  | \\_/ ||  | .  //  
 \_____||   \___//   |_|\_\\   \____//   |_|\_\\  
  `----`    `---`    `-` --`    `---`    `-` --`

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發送短信 : Physico-chemical and Mineralogical Properties of Fly Ash from Thermal Power Stations in Northern Vietnam