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

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Text this: Tools of Radio Astronomy (Fifth Edition)