■ 
INTERNATIONAL SOCIETY FOR PHOTOGRAMMETRY 
Xlh INTERNATIONAL CONGRESS 
LISBON 1964 
and convergence in 
immetric theories, 
lodel gets its abso- 
th curvature on the 
a model in different 
:cts of earths curva- 
il model of several 
; separated fromtho- 
re discussed. Finally 
.s investigated. 
ANALYTICAL AERIAL TRIANGULATION 
Milan en 1962 : 
iangulation, 
en fonction de la 
ion de l'aérotrian- 
BY 
E. H. THOMPSON 
UNIVERSITY COLLEGE LONDON 
INVITED PAPER FOR COMMISSION III 
LONDON 1964