<a href="https://en.wikipedia.org/wiki/Simon_Schaffer" class="extiw" title="en:Simon Schaffer">Simon Schaffer</a> (b. 1955), a British historian of Science at a summer school in St. Petersburg (Russia).
<a href="//commons.wikimedia.org/wiki/User:Alexei_Kouprianov" title="User:Alexei Kouprianov">Alexei Kouprianov</a>
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<span class="int-own-work" lang="en">Own work</span>