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<h2 id="references">References</h2> <ol> <li id="fn:1"><p>industrial diamond. Encyclopædia Britannica <a href="http://www.britannica.com/EBchecked/topic/287017/industrial-diamond?anchor=ref71892" target="_blank">http://www.britannica.com/EBchecked/topic/287017/industrial-diamond?anchor=ref71892</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> </ol>