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21 results for: observation

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The wonders of science
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The wonders of science

The wonders of science
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The wonders of science

The wonders of science
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The wonders of science

The wonders of science
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The wonders of science

A book for children: the Battle of Essling
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A book for children: the Battle of Essling

War in Korea / Chinese soldiers
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War in Korea / Chinese soldiers

Different phases of the moon drawn by Galileo.
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Different phases of the moon drawn by Galileo.

Image of purported UFO, Passoria, New Jersey, USA, 31st July 1952
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Image of purported UFO, Passoria, New Jersey, USA,...

Image of purported UFO, Minnesota (USA), Sheffield (UK)
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Image of purported UFO, Minnesota (USA), Sheffield...

Observation of the attack on Fort Douaumont
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Observation of the attack on Fort Douaumont

Norwegian South Pole expedition, lead by Roald Amundsen in 1911-1912.
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Norwegian South Pole expedition, lead by Roald Amu...

World War I. The observer of a captive hot-air ballon called "Sausage" phoning in his observations (1917)
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World War I. The observer of a captive hot-air bal...

World War I. The observer of a captive hot-air ballon called "Sausage" checking the straps of his parachute (1917)
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World War I. The observer of a captive hot-air bal...

World War I. In Alsace, led by muleteers, Generals Joffre and Dubail, on muleback, on their way to a forest observation post (1915)
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World War I. In Alsace, led by muleteers, Generals...

World War I. A pilot giving an account of his aerial observations to General Villaret (1915)
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World War I. A pilot giving an account of his aeri...

Flameng, The British offensive of the Somme (1916)
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Flameng, The British offensive of the Somme (1916)

World War I. Trench warfare (1915)
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World War I. Trench warfare (1915)

World War I. Observation balloon above the Picardy front (1916)
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World War I. Observation balloon above the Picardy...

World War I. Women workers making observation balloons
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World War I. Women workers making observation ball...

World War I. Women workers making observation balloons (England, 1918)
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World War I. Women workers making observation ball...

World War I, Return of the balloon
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World War I, Return of the balloon