<a href="https://en.wikipedia.org/wiki/Ludwig_Boltzmann" class="extiw" title="en:Ludwig Boltzmann">Ludwig Boltzmann</a> (1844 - 1906), austrian scientist
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Unknown author<span style="display: none;">Unknown author</span></div>
circa 1900 <div style="display: none;">date QS:P571,+1900-00-00T00:00:00Z/9,P1480,Q5727902</div>
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