Vol. 3, No.5, June, 1971 
  
Rawiel, R.F. : Camera Calibration from Star Images. 
Singels, C. + = Planning of Photogrammetric Procedures. 
Malan, J.J. : The Photographic Response in Autopositive 
Material. 
Malan, J.J. : Reproduction of Screened Positive Transparencies. 
The South African Survey Journal. 
Jenkins, D.P. : Ihe Use of an A8 as a Stereocomparator for 
and Analytical Bridging, Vol. XII, 70, April, 
Marriott, C.E. 1969 and Vol. XII, 73, April, 1970. 
Scogings, D.A. : Some Non-Topographical Uses of Photogrammetry in 
South Africa, Vol. Xll, 71, August, 1969, 
Scogings, D.A. : Cato Manor Cadastral Survey Test, Vol. XII, 75, 
and December, 1970. 
Marriott, G.E 
Williams, H.S. : A Theorem in Least Squares .- Omission or 
Addition of Observations After Parametric 
Adjustment, Vol. XIII, 78, December, 1971. 
(iii) Proceedings of the Fourth South African National Survey 
Conference, Durban, July, 1970. 
(iv) Symposium.on the Use of Colour Aerial Photography: Salisbury, 
Rhodesia, October, 1970, reported im The Rhodesia Science 
News, Vol. 5, No.8, August, 974, 
COMMISSION VII. PHOTO INTERPRETATION 
  
RAPPORTEUR: Dr. T.C. Partridge 
During the period 1968-1972 the principal applications of airphoto inter- 
pretation in South Africa have been in the Earth Sciences, although its 
uses in Biological studies have increased significantly. 
Photogeological investigations are pre-eminent among all airphoto studies, 
but terrain evaluation for engineering, urban and regional development 
planning and military purposes relies almost as heavily on the interpret- 
ation of aerial photographs. Considerable use is made of photographic 
data in regional surveys of natural resource potential at reconnaissance 
level, while numerous land-use and population studies have been carried out 
through this medium. : 
Biological applications include vegetation surveys and plantecological and 
conservation studies. Great use is also made of low-alti tude colour 
photography in conducting wild life censuses in the Kruger National Park. 
With the increasing availability of multi-spectral imagery in South Africa, 
considerable research effort is being devoted to an assessment of the 
relative advantages of images from limited wave band in a variety of 
applications. Such research is an important pre-requisite for the pro- 
posed South African participation in the ERTS multi-spectral satellite 
programme.