Sydney ESEM prototype -world's first
Gerry Danilatos (<a href="//commons.wikimedia.org/wiki/User:Esem0" title="User:Esem0">user:Esem0</a> at en.wikipedia, original upload at <a class="external free" href="https://en.wikipedia.org/wiki/File:ESEM_prototype.png">http://en.wikipedia.org/wiki/File:ESEM_prototype.png</a>
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