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

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Text this: Tools of Radio Astronomy (Fifth Edition)