INTERNATIONAL INSTITUTE 
FOR 
AERIAL SURVEY 
AND 
EARTH SCIENCES (ITC) 
DELFT, THE NETHERLANDS 
  
INVITED PAPER FOR THE INTERCOMMISSION WORKING GROUP IV/VII 
E.S. BOS and H.C. ZORN 
AERIAL PHOTOGRAPHS AND BASE-MAPS 
FOR RESOURCES DEVELOPMENT 
  
ELEVENTH CONGRESS OF THE INTERNATIONAL SOCIETY FOR PHOTOGRAMMETRY. LAUSANNE 1968 
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