JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
Online ISSN : 1349-838X
Print ISSN : 0019-2341
ISSN-L : 0019-2341
Development of battery and lamp monitors for emergency incandcent light with built-in batteries
Seiji SogaSeiji HamabataSatoshi TeramotoSuguru Jinno
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1984 Volume 68 Issue Appendix Pages 30

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© The Illuminating Engineering Institute of Japan
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