Roadside hazards, traffic barriers, and safety appurtenances / 
National Research Council (U.S.). Transportation Research Board. 
 - Washington, D.C.:  Transportation Research Board. National Research Council,  1980. 
 - iv, 50 p. :  ill.,  28 cm. 
 - Transportation research record ;  769 .
<br/><br/><label>ISBN: </label>0309031133 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roads--Guard fences.<br/>Roads--Safety measures.