Alternative description of the Oud (lute) instrument, as appears in the treatise
<p>Originally written by Safi al-Din al-Urmawi (d. 1294 AD)
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This copy is dated at 1692 AD
U. Penn. library scanned copy of old treatise, accessible at <a rel="nofollow" class="external free" href="https://repository.upenn.edu/sims_ebooks/172/">https://repository.upenn.edu/sims_ebooks/172/</a>