s of impartiality, be- 
s are perfectly capa- 
and strictly impartial 
and checks and com- 
:d by Dr David, Mr 
> of such a character 
t with by some inter- 
up the thread left by 
e at Delft propose to 
ts of different films. 
ictions I would refer 
» in Aerial Photogra- 
are given. There it is 
epared to act as such 
testing aerial photog- 
ts phases, as the need 
work is carried out as 
tive, but part of it can 
capacity of the IT C 
r Aerial Survey which 
ntly. 
  
  
Results of Practical Investigations into the 
Accuracy of Aerial and Terrestrial 
Photographs 
By 
B. HALLERT 
SARTRYCK UR SVENSK LANTMATERITIDSKRIFT NR 3 1960