Actinic Press, London, 1938.

Huxley, Aldous,

The Doors of

Harper & Row, New York, 1963.

Iredell, C. E.,

Colour and Cancer,

H. K. Lewis & Co., London, 1930.

Itten, Johannes,

The Art of Color,

Reinhold Publishing Corp., New York, 1961.

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