XIII CONGRESS OF THE INTERNATIONAL SOCIETY OF PHOTOGRAMMETRY 
HELSINKI 1976 
COMMISSION I, OTF/MTF WORKING GROUP 
UDC 
  
WORKING GROUP REPORT: OPTICAL AND MODULATION TRANSFER FUNCTIONS 
PHYSICAL SCIENCES LABORATORY BRANCH 
DIRECTORATE OF MAINTENANCE 
HILL AIR FORCE BASE, UTAH 
AIR FORCE LOGISTICS COMMAND