Seventh International Congress of Photogrammetry 
(Washington, 4-13 September, 1952) 
  
EST I A CREME 
THE 
HISTORY OF PHOTOGRAMMETR Y 
IN CANADA 
(Compiled for Commission VI) 
  
  
NATIONAL RESEARCH COUNCIL 
OTTAWA 
4 July 1952 NRC No. 2809 
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