أرسل هذا في رسالة قصيرة: Actual Stituation of Heavy Metals' Contamination in Groundwater of Hanoi Area

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