Latest developments in aerial survey and photography work of two British firms briefly discussed; Aircraft Operating Co.'s air survey of 1000 sq. miles of territory, adjacent to Bagdad; air survey of Zambesi River; maps of 12,000 sq. mi. to be prepared for Government of Northern Rhodesia; work of Air Survey Co. in India; survey and mapping entire Malda district; radial method of plotting with close net-work of control points; 1680 control points established by ground party; D. H. 9 aircraft and Eagle Air Cameras used.
Aerial survey makes good
Flight
Flight ; 20 , n 1
1928
Article (Journal)
English
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