Internet Database of Periodic Tables
There are thousands 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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XBL 769-10601, Periodic Table Before World War II
An internal document of the Lawrence Berkeley Laboratory XBL 769-10601 shows a late 1930s (pre World War II) periodic table.
Note that this formulation erroneously predicts positions for transuranium elements:
© Mark R. Leach 1999-
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