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Depiction of an atom.
UMG21A15_179

Depiction of an atom.

August Kekule (1829-1896). Engraving. Colored.
UMG20B39_324

August Kekule (1829-1896). Engraving. Colored.

The body of vladimir lenin in the mausoleum on red square which will be closed to the public untill april 5 because of prophylactic works, scientists of the laboratory of biological structures have be...
UMG20B04_144

The body of vladimir lenin in the mausoleum on red...