أرسل هذا في رسالة قصيرة: Acetic acid effects on methanogens in the second stage of a two-stage anaerobic system

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