URSS 1951
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1951 - Liberation of Bulgaria
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1951 - Liberation of Albania
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1951 - 27th anniversary of Lenin's death
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1951 - 25th anniversary of the Kyrgyz Republic
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1951 - Honor to the Republic of Mongolia
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1951 - 30th anniversary of the Republic of Georgia - 1st series
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1951 - Stockholm Manifesto for Peace
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1951 - 25th anniversary of the death of D.A. Furmanov
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1951 - 150th anniversary of the Kirov factories
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1951 - In honor of the Republic of Hungary, views of Budapest
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1951- Modern Agriculture
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1951 - 175th anniversary of the founding of the Moscow Grand Theatre
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1951 - 30th Ann., Rep. of Georgia 2nd series
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1951 - 5th Anniversary of Kalinin's Death
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1951- Russian Illustrious Men
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1951, 5th year. death of M.L. Kalinin. N.E., overprinted for the VIII Mendelejev congress
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1951 - 25th anniversary of the death of F.E.Dserschinski
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1951- Composers, B.S.Kalinnikov and A.A. Aljabjev
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1951 - Air Sports Week
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1951 - 34th Anniversary of the October Revolution
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1951 - 25th Anniversary of the Death of V.M. Wassnezov
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1951- Hydroelectric works
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1951 - Peace Conference in Moscow
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1951-150th anniversary of the birth of M.W.Ostrogradski
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1951 - Friendship with Czechoslovakia
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1951 - 25th anniversary of the Lenin Hydroelectric Station
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1951 - 125th anniversary of Ssemenov's birth
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USSR - 1951 - Full Year 1951.