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    • 1958

    Daniel Alcides Carrión García (August 12, 1857 – October 5, 1885) was a Peruvian medical student after whom Carrion's disease is named. The stamp depicts Saint Martin de Porres Velázquez, known as a patron saint of…

    • 1975

    Cachet depicts the wavelength of krypton-86, which was formerly used to define the meter from 1960 until 1983. A meter was defined during this time as the wavelength of the 605 nm (orange) spectral line of a krypton-86…

  1. Stamp from the "Builders of Socialism" series, depicting aspects of chemistry and related sciences.

    • 1977

    While celebrating its centenary in 1977, the Royal Institute of Chemistry of Great Britain shared honors with English Nobel prize winners in chemistry and physics. This stamp commemorates W. N. Haworth's receipt of the…

    • 1968

    Stamp was issued on the occasion of a Natural Rubber Conference held in Kuala Lumpur, Malaysia, in 1968. It depicts a space-filling model of isoprene and a representation of the traditional way of collecting natural…

    • 1975

    Stamp depicts scales weighing jars of jam, with text, "2 1/4 lbs of Jam is a little more than a kilogram."

    • 1962

    Stamp printed to promote world anti-malaria campaign. Depicts a chinchona plant and chemical formulas for chloroquine and primaquine, medications used to treat malaria.

    • 1967

    Depicts logo for Expo '67 inside a diagram of an atom (diagram may represent an orbiting spacecraft).

    • 1965-Jun-15

    Stamp issued to publicize the 20th Congress of the International Union of Pure and Applied Chemistry (IUPAC), held in Moscow, July 12-18. The names of both the organization and the host city are spelled with chemical…