000 00571 a2200241 4500
001 303697
020 _a0-309-02826-4
041 _aeng
080 _aLTRB TRR 681 : 1978
245 _aTraffic control devices, visibility, and geometrics
250 _a
260 _aWashington, D.C.
260 _bTRB
260 _c1978
300 _a94 p.
300 _c
856 _u
490 _aTRB TRR 681 : 1978
700 _a
650 _a
650 _aTraffic signs and signals, Visibility-Congresses, Roads-Design-Congresses, Traffic safety-Congresses
942 _cPP
942 _2UDC
999 _c252306
_d252306