The relation between illumination and visual efficiency
the effect of brightness contrast
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Word Count
8,750 words, Guess
Page Count
35 pages
Identifiers
- Open LibraryOL6484131M
- OCLC Control Number9078186
- Library of Congress Control Number45007837
Classifications
- DDC658.24
- LCCHD7695 .A3 no. 87
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