Template:Are You Sure/December 31
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![](/w/images/thumb/e/e3/Woodward_and_Burroughs_distill_Extract_of_Radium.jpg/175px-Woodward_and_Burroughs_distill_Extract_of_Radium.jpg)
Woodward and Burroughs preparing Extract of Radium for a New Year's Eve party.
• ... that mathematician Thomas Joannes Stieltjes' work was an important early step towards the theory of Hilbert spaces?
• ... that ?
• ... that ?