Denmark - Circa 1960: stamp printed by Denmark, shows Niels Ryberg Finsen Danish physician, known for having discovered the germicidal effect of ultra

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Denmark - Circa 1960: stamp printed by Denmark, shows Niels Ryberg Finsen Danish physician, known for having discovered the germicidal effect of ultraviolet light. He received the Nobel Prize in 1903, circa 1960

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Size: 4426px × 5800px
Photo credit: © KarSol / Alamy / Afripics
License: Royalty Free
Model Released: No

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