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Subject Río, Andrés Manuel del, 1764-1849 Remove constraint Subject: Río, Andrés Manuel del, 1764-1849

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    • 1965-Feb-18 (Date of issue)

    Mexican postage stamp commemorating the 200th anniversary of the birth of Spanish-Mexican scientist, engineer, and naturalist Andrés Manuel del Río (1764-1849) best known for his discovery of compounds of vanadium in…