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Great Telescope of the Observatory in Paris.
DFS15A00_070

Great Telescope of the Observatory in Paris.

The observatory in Beijing in 1696
DFS15A00_071

The observatory in Beijing in 1696

Meeting between Indian and Pakistani officers and members of the U.N. Military Observation Group (1955)
DFS09A09_300

Meeting between Indian and Pakistani officers and ...

An Uruguayan officer patrolling on horseback along the Kashmir cease-fire line (1955)
DFS09A09_298

An Uruguayan officer patrolling on horseback along...

U.N.: Yugoslav soldiers in their observation post in Ras el Nagb, in the Sinai desert
DFS09A05_314

U.N.: Yugoslav soldiers in their observation post ...

Docteur Edwin P. Hubble with the Palomar mount's famous "Big Schmidt"
DFS09A02_144

Docteur Edwin P. Hubble with the Palomar mount's f...

France. New type of observation balloon
DFS09A10_420

France. New type of observation balloon

France. New type of observation balloon
DFS09A10_419

France. New type of observation balloon