Robert Delaunay; Light and Color

Gustav Vriesen and Max Imdahl. Translated from German by Maria Pelikan

Robert and Sonia Delaunay

Hajo Düchting, English translation by Karen Williams

Robert Delaunay

Robert Louis Stevenson's A Child's Garden of Verses to Color

Robert Louis Stevenson, Diane De Groat

The New Art of Color

and with an introd. by Arthur A. Cohen

Le premier colon

Éric Le Badezet

Color Atlas of Periodontics,Rapp, Robert,Mosby, Incorporated

Robert Rapp, Gerald Bernard Winter