The Human Atmosphere,

Rebman Co., New York, 1911.

Klee, Paul,

The Thinking Eye,

George Wittenborn, New York, 1964.

Klein, Adrian Bernard,

Colour-Music, The Art of Light,

Crosby Lockwood & Son, London, 1930.

Klopfer, Bruno and Douglas McG. Kelley,

The Rorschach Technique,

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