Describir: An introduction to library classification :

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