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hydrogen atom & Niels Bohr

  • Colnect-3939-732-Bohr-Niels.jpg
  • Colnect-156-318-Bohr-Niels.jpg
Short desc: hydrogen atom & Niels Bohr


Things in this design:
person Niels Bohr

This design is used by 2 stamps: (See all uses as list)
11/21/1963 35o redbrn
11/21/1963 60o dkbl

All are Denmark issue=Bohr theory 50th perf=12.75






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