Old aerial photographs: past in focus
Russell, L.
Old aerial photographs: past in focus - 1994 - New Civil Engineer (1106) 10 November 1994, 18-20(3) .
Discusses the advantages of using old aerial photographs in construction, as a cost-effective means of detecting potential hazards such as soft ground and swallow holes.
AERIAL PHOTOGRAPHY
ORDNANCE SURVEY
Old aerial photographs: past in focus - 1994 - New Civil Engineer (1106) 10 November 1994, 18-20(3) .
Discusses the advantages of using old aerial photographs in construction, as a cost-effective means of detecting potential hazards such as soft ground and swallow holes.
AERIAL PHOTOGRAPHY
ORDNANCE SURVEY