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national joint committee on uniform traffic control devices
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Manual on uniform traffic control devices for streets and highways
National Joint Committee on Uniform Traffic Control Devices. · U.S. Department of Commerce, Bureau of Public Roads
333 sayfa · 1942
Traffic signs and signals / Handbooks, manuals / Traffic regulations
Revisions to the manual on uniform traffic control devices for streets and highways
National Joint Committee on Uniform Traffic Control Devices (U.S.) · Dept. of Commerce, Bureau of Public Roads
15 sayfa · 1954
Traffic signs and signals