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Mailing envelope - 36th Congress of the International Federation of Shorthand

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4d 22h 58m

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Mechanical Envelope with Special Post Printing Post 1984 Portugal

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Sciences sociales et sante

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Envelope - official of the Bulgarian Academy of Sciences (BAS) + promotional bracelet

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6d 1h 5m

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PR 68 DCAM-Silver coin 20 BGN Academy of Sciences 1989

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Sciences économiques et sociales Tle ES : Obligatoire science

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1990 P 2853 - Congress of the Bulgarian Agrarian National Union

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1990 P 2853 - Congress of the Bulgarian Agrarian Union

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12h 41m 33s

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1986 P 2414 - Congress of the Bulgarian Agrarian National Union

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13h 45m 6s

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BGN 10, 2019 "Bulgarian Academy of Sciences 150 - BAS"

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FIRST DAY MAIL. ENVELOPE-X Congress of Inter.org. of Journalists

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Germany 1996 First Day Cover Academy of Arts Berlin

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THE SCIENCES - NEW YORK ACADEMY OF SCIENCES, USA 05-06.1995

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First day postal envelope 80 Buzludzha Congress 1971

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Card Bulgaria Sofia Bulgarian Academy of Sciences 3*

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272765 / Bulgaria FDC 1967 XXXI Congress of the Bulgarian Agrarian Union

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