Stamps, American scientists (2008) design type
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United States
postage2008, Mar 6 American scientists (2008) unwmk p. 11
| - | 41 | multi | Gerty Cori & glucose 1-phosphate diagram | |||
| - | 41 | multi | Linus Pauling | |||
| - | 41 | multi | Edwin Hubble & Mount Wilson Observatory | |||
| - | 41 | multi | John Bardeen |
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