JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
Online ISSN : 1349-838X
Print ISSN : 0019-2341
ISSN-L : 0019-2341
On the Road Traffic Signals
Hiroyuki KoyamaHikaru MasakiJoji Inagaki
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1980 Volume 64 Issue 6 Pages 315-318

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© The Illuminating Engineering Institute of Japan
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