Text this: Monitoring and risk assessment of pesticides in a tropical river of an agricultural watershed in northern Thailand

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