19 
Air photography: 
1964-1967 
Total since 
1934 
Large scale : 
Medium scale: 
Small scale : 
15.600 Sq. Kms 
98.200 Sq. Kms 
145.500 Sq. Kms 
27.220 Sq. Kms 
396.000 Sq. Kms 
366.300 Sq. Kms 
The Companys 
film library comprice 574.346 negatives. 
Photographic mosaics prodused 
1964-1967 
Total since 
1934 
Large scale: 
Medium scale: 
Small scale: 
240 Sq. Kms 
4.749 Sq. Kms 
100.008 Sq. Kms 
8.970 Sq. Kms 
71.081 Sq. Kms 
183.690 Sq. Kms 
Maps produced: 
1964-1967 
Total 
Large scale : 
Medium scale: 
Small scale : 
820 Sq. Kms 2 
8.100 Sq. Kms 2 
11.600 Sq. Km 2 s 
2.169 Sq. Kms 2 
23.371 Sq. Kms 2 
24.201 Sq. Kms 2 
Wider0e Surveys has now started a branch for regional 
planning, and is extending its laboratories with a new build 
ing with a floor area of 4 300 Sq. Meters. 
LITERATURE: 
Amundsen, O.: Photos and maps. 1 Skogbruksboka III (Book of forestry), 
1964. 
— Determination of the stand volume from aerial photographs. 1 Reports 
from Institute of Inventory, NLH, No. 1, 1965. 
— Photogrammetry in forestry. 1 Textbook. Universitetsforlaget, Oslo 1967. 
Halsen, G. : Photogrammetry and Road planning. 1 Norwegian Journal of 
Land consoldation — Land use planning-Surveying (NTJL) No. 2, 
1964. 
Holsen, J. : The absolute orientation of approximate vertical aerial photo 
graphy. 1 Compendium, Institute of Geodesy and Photogrammetry, 
NTH, Trondheim, 1964. 
— Aerial Triangulation in Space. 1 Compendium, Institute of Geodesy 
and Photogrammetry, NTH, Trondheim. 1965.