000			00683nam a2200181 a 4500
001			00323225
005			20240602095528.0
020			_a0309031133
090	0	0	_b625.795/N277r
110	2	0	_aNational Research Council (U.S.). _bTransportation Research Board.
245	1	0	_aRoadside hazards, traffic barriers, and safety appurtenances / _cNational Research Council (U.S.). Transportation Research Board.
260	0	0	_aWashington, D.C.: _bTransportation Research Board. National Research Council, _c1980.
300	0	0	_aiv, 50 p. : _bill., _c28 cm.
440	0	0	_aTransportation research record ; _v769
650	0	0	_aRoads _xGuard fences.
650	0	0	_aRoads _xSafety measures.
942			_2ddc
999			_c10212 _d10212