MOSCOW, RUSSIA - MARCH 25, 2023: Postage stamp printed in Switzerland shows Difluorbutane Molecule: 3 Formula, International Chemics Nomenclature Conf

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MOSCOW, RUSSIA - MARCH 25, 2023: Postage stamp printed in Switzerland shows Difluorbutane Molecule: 3 Formula, International Chemics Nomenclature Conference serie, circa 1992

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Size: 3997px × 2940px
Photo credit: © Alexander Mitrofanov / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 3, 90, 1992, chemics, chemistry, conference, difluorbutane, formula, historic, hobby, image, international, isolated, issue, letter, mail, molecule, nomenclature, philatelic, philately, post, postage, postal, postmark, retro, stamp, switzerland, vintage