JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
Online ISSN : 1349-838X
Print ISSN : 0019-2341
ISSN-L : 0019-2341
Visual requirements for legibility and readability of visual signs
Yoshihiko TabuchiHajimu Nakamura
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1992 Volume 76 Issue 1 Pages 8-12

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© The Illuminating Engineering Institute of Japan
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