GERMANY - CIRCA 1971: A stamp printed in Germany issued for the 400th birth anniversary of astronomer Johannes Kepler

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GERMANY - CIRCA 1971: A stamp printed in Germany issued for the 400th birth anniversary of astronomer Johannes Kepler shows Astronomical Calculus, circa 1971.

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Size: 2668px × 4352px
Photo credit: © Neftali / Alamy / Afripics
License: Licensed
Model Released: No

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