Describir: Classification and indexing in science /

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