Bohr theory 50th issue of Greenland
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Short desc: Bohr theory 50th
Issuer: Greenland Date: 11/21/1963 Occasion: Bohr theory Number/Year: 50 Consists of 2 stamps: (See stamps as list) 35(o) redbrn 60o dkbl All are d=hydrogen atom & Niels Bohr perf=12.75 Issues with this name: Denmark, Greenland |
