Learning with Colour; Mathematics. Exploring the World of Numbers and Space by Irving Adler
1966. 2nd Impression. 91 pages. No dust jacket. Red cloth. Full title: Learning with Colour; Mathematics. Exploring the World of Numbers and Space. Colour illustrations throughout. Binding remains firm. Pages and illustrations are lightly tanned throughout. Boards have light shelf-wear with corner bumping. Light sunning to spine and edges with crushing to spine ends.