Describir: AIC color 89 proceeding of the 6th Session of Association Internationale de la Colour, Buenos Aires, Argentina :

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