1 dataset found
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Federal
Declass 3 (2013) = USGS Subset of Hexagon Missions - KH-9: 1971 - 1984 recent views
Department of the Interior —
'Keyhole (KH) satellite systems- KH-9 acquired photographs of the Earth\'s surface with a telescopic camera system and transported the exposed film through the use of...
1 dataset found