2. Inventory Control is also implemented by all respondents. 
Some specified in particular that raw materials , work 
in progress, and finished products controls are performed 
before, during, and after the production runs, respectively. 
3. Some form of Quality control is also maintained by each 
respondent. Field checks are performed during and after the 
photogrammetric operations. Checks for thorough completion 
of specific items in a project is emphasized by each respondent. 
Mostly the errors are expressed and assessed in terms of 
standard deviations. 
VII. The following suggestions are worth sharing: 
Organizations in the so-called "Developing "'countries are 
generally experiencing slow progress because of economic 
wo.es and fluctuations. They generally invite suggestions and 
comments so that these could be used as guides in improving 
photogrammetric operations. 
The information concerning cost, accuracy, time, etc. which 
any organization /country has accumulated through years is 
of importance in planning for the future. The considerable 
differences in costs on labor, materials, and equipment would 
make it almost impossible to use one general "model" for every 
organization/country. Research in this direction should be 
encouraged. 
BIBLIOGRAPHY 
Mudge, Arthur E. : Value Engineering, 1971 ; McGraw-Hill Book 
Co., 286 pp. 
Ghosh, Sanjib K. : Economic Aspects in Special (Non-Topographic) 
Applications of Photogrammetry, 1976 ; Invited Paper, 
ISP Commission VI , XIII Congress, Helsinki ; 11 pp. 
.Seiler, Karl : Introduction to Systems Cost Effectiveness, 1969 ; 
Wiley-Interscience ; xii + 108 pp.