Full text: Commissions III and IV (Part 5) 

      
      
THE ROLE OF AERIAL SURVEYS 
IN HIGHWAY ENGINEERING 
William T. Pryor, Chief 
Aerial Surveys Branch 
Highways Standards Division 
Bureau of Public Roads 
   
  
  
  
  
U.S. DEPARTMENT OF COMMERCE m 
Bureau of Public Roads I 
Washington 25, D.C.
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