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About propylene glycol

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An early design on the atom was designed in 1913 with the Danish scientist Niels Bohr (1885–1962). The Bohr design demonstrates the atom to be a central nucleus containing protons and neutrons, Together with the electrons in circular electron shells at precise distances with the nucleus, comparable to planets orbiting https://frankz210qhw8.wizzardsblog.com/profile

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