Stamps of Poland, 10 Mar 1976
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postage
1976, Mar 10 telephone 100th issue unwmk (no perf info)
| X | 1.50z | multi | old telephone & radio dish & satellites |
1976, Mar 10 Joint Institute of Nuclear Research 20th issue p. 11.25
| X | 1.50z | multi | atom symbol & flags |
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