Describir: Preliminary report of O.S.A. subcomittee on the spacing of the Munsell colors

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