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Communications handbook for traffic control systems [microform]

Communications handbook for traffic control systems [microform]
Microform図書
1993<YCA-TD 2.30/13:93-052>
National Diet Library
  • Subject HeadingHighway communications -- United States -- Handbooks, manuals, etc Traffic engineering -- United...

Guidelines on the use of changeable message signs microform : summary report

Guidelines on the use of changeable message signs microform : summary report
Microform図書
1991<YCA-TD 2.30/4:91-002>
National Diet Library
  • Subject Heading..., manuals, etc Highway communications -- United States -- Handbooks, manuals, etc Optical communications -- Han...

Guidelines on the use of changeable message signs microform

Guidelines on the use of changeable message signs microform
Microform図書
1991<YCA-TD 2.30/4:90-043>
National Diet Library
  • Subject Heading..., manuals, etc Highway communications -- United States -- Handbooks, manuals, etc Optical communications -- Han...

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