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

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Text this: Geographic information analysis / David O'Sullivan and David J. Unwin.