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ARGENTINA/COVERS, 2004 – FISH OF THE FALKLANDS – YV 3385/88 – 4 VALUES – FDC
PRESERVATION OF THE AUSTRAL ECOLOGICAL SYSTEM
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ARGENTINA/COVERS, 2005 – COMMEMORATIONS – CAT GJ 3438/39 – 2 VALUES – FDC
WORLD PHYSICAL YEAR – BALSEIRO INSTITUTE
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ARGENTINA/COVERS, 2005 – PERSONALITIES – CAT GJ 3457 – 1 VALUE – FDC
JUAN FILLOY (1894-2000) ARGENTINE WRITTER
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ARGENTINA/COVERS, 2005 – PERSONALITIES – MEDICINE – CAT GJ 3445 – 1 VALUE – FDC
CESAR MILSTEIN (1927-2002) NOBEL PRIZE IN MEDICINE