Wilson, Wilbur M. <br/><br/>
investigation of rigid frame bridges. part 2: laboratory te-sts of reinforced concrete rigid frame bridges / by Wilbur -M. Wilson, Ralph W. Kluge and John V. Coombe 

 - Urbana, Illinois : University of Illinois, Engineering Experiment Station 
 - 78 p. 
 - Bulletin ; no.308 .