Describir: Books in the age of on line information :

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