Color Atlas - A Practical Guide for Color Mixing by Harald Kueppers

Basic Law of Color Theory (English - Paperback, by Kueppers Harald - Acceptable

Vertigo: The Rise and Fall of Weimar Germany by Harald Jahner

The Basic Law of Colour Theory, Kueppers, Harald

Basic Law of Color Theory Paperback Harald Kueppers

Color : Origin, Systems, Uses Hardcover Fred, Kueppers, Harald Br

Need a Miracle? by Harald Bredesen, Acceptable Book