<div class="description">
<dl><dd>Cover title</dd>
<dd>Includes index</dd>
<dd>Prepared for the Highway Research Board</dd></dl><br>Subjects: Traffic safety</div>
<div class="fn value">
<dl><dd>Helvestine, Mildred A. (Mildred Althea Wilson)</dd>
<dd>United States. Bureau of Public Roads</dd></dl></div>
Internet Archive identifier