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

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