Describir: The nature of cities. Origin, growth, and decline pattern and planning problems /

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