Helene W. Eckstein

Color in the 21st Century: A Practical Guide for Graphic Designers, Photographers, Printers, Separators and Anyone Involved in Color Printing  Helene W. Eckstein Paperback. Diane Pub Co, 2001-05 ISBN 9780788198366     Color in the 21st Century: A Practical Guide for Graphic Designers, Photographers, Printers, Separators, and Anyone Involved in Color Printing  Helene W. Eckstein Paperback. Watson-Guptill Publications, 1991-09 ISBN 9780823007431