An investigation of the design and performance of traffic control devices

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245 0 3 ‡aAn investigation of the design and performance of traffic control devices, ‡cby...and Herman and Lees Associates, prepared for U.S. Bureau of Public Roads, Contract no.CPR-11-5955.
260 ‡aCambridge, Mass., ‡cDec.15, 1968.
300 ‡aFOR FURTHER BIBLIOGRAPHIC INFORMATION SEE CARD CATALOG IN THE TRANSPORTATION LIBRARY.
538 ‡aMode of access: Internet.
650 7 ‡aTraffic signs.
710 2 0 ‡aBolt, Beranek, and Newman, inc.
CID ‡a011242299
DAT 0 ‡b20110927000000.0
DAT 1 ‡a20120815043946.0 ‡b2023-09-14T17:32:26Z
DAT 2 ‡a2023-09-14T17:30:02Z
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