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Blue-Sky Thinking: *The Influence of the Blue Ray of the Sunlight* (1877)

Books /

Science & Medicine, Design & Typography

Blue-Sky Thinking: The Influence of the Blue Ray of the Sunlight (1877)

Edwin D. Babbitt’s *Principles of Light and Color* (1878)

Books /

Science & Medicine

Edwin D. Babbitt’s Principles of Light and Color (1878)