Sheet material with the periodic circle of the elements

Office supplies; artists and teachers materials – Teaching material

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D19 1, 434282, 1907

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D03960609

REFERENCES:
patent: D102135 (1936-12-01), Goshorn
patent: 2492563 (1949-12-01), Flickinger et al.
patent: 3374555 (1968-03-01), Hart
patent: 3390468 (1968-07-01), Mitchell
patent: 3960046 (1976-06-01), Choong
1870 H. Baumhauer in "The Periodic System of the Chemical Elements", J.W. van Spronsen, 1969, p. 141.
B.K. Emerson, Am. Chem. J., vol. 45 (1911) p. 161.
C. Janet, Chem. News, vol. 138 (1929) p. 373.
1928 C. Janet in "Graphic Representations of the Periodic System During One Hundred Years", E.G. Mazurs, 1974, p. 89.
C. Janet, Chem. News, vol. 138 (1929) p. 389.
1947 C.A. Zappfe in Mazurs, p. 114.
L. Sibaiya, Am. J. Phys., vol. 9 (1941) p. 122.
1941 L. Sibaiya in Mazurs, p. 124.
F. Scheele, Z. Naturforsch., vol. 5a (1950) p. 12.
1950 F. Scheele in Mazurs, p. 133.
Fisher Scientific Co., 1964 Periodic Chart of the Elements.

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