EO system design. A prime candidate for such expansion would be 
san Graphics which: depict error propagation results from the whole 
2d network. The utilization of intelligent graphics terminals did 
accommodate nicely the human interaction which is very much 
needed during the graphic composition process. 
  
REFERENCES 
  
1. Elassal, A.A., 1983, Generalized Adjustment by Least Squares 
(GALS) : Photogrammetric Engineering and Remote Sensing, 
Vol. XLIX;No.2, pp 201-206. 
2. , 1983, "Managing Mapping Data Using Commercial 
Lo- Data Base Management Software": Proceedings of XVII 
Congress for Federation Internationale Des Geometres 
(FIG), Commission 5. 
3. Computer Corporation of America, 1979, "Host Language 
Interface Manual, Model 204 Data Base Management 
System." 
O rt 
th mn 
> 
, "User Language Manual, Model 204 Data Base Manage- 
ment System."