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

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Text this: Stable isotope geochemistry. (6th ed.)