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The INTERNET Database of Periodic Tables
There are hundreds of periodic tables in web space, but there is only one comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Dr Mark R Leach.
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1949
Riggli's Volumetric Model of the Periodic Table
From the Russian Book "100 Years of Periodic Law of Chemical Elements", Nauka 1969, p.87.
The caption says: "Volumetric Model of 18-period Long System of D.I.Mendeleev." after Riggli (1949).
Thanks to Larry T for the tip!
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