Stamps of Romania, 30 Aug 1999
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postage
1998, Mar 31 20th Century issue unwmk p. 13.25
| - | 800L | multi | Alexander Fleming discoverer of Penicillin | |||
| - | 3000l | multi | League of Nations 1920 | |||
| - | 7300l | multi | heavy water diagram & H. C. Urey | |||
| - | 17000L | multi | First marine drilling platform in Texas 1934 |
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