Kitāb-i Advār. [کتاب ادوار]

Kislak Center for Special Collections, Rare Books and Manuscripts, LJS 295. Iran?, 1412. Composite manuscripts with two works. The first is a Persian translation of al-Urmawī's treatise the theory of music, including division of frets, ratio of intervals, consonance and dissonance, cycles, rhythmic and melodic modes, and the 5-string oud or lute (f. 1v-38v). The second is a short, anonymous work on the science of letters (ʻilm al-ḥurūf) (f. 41r-61v).Penn Libraries Catalog: go to Find

উৎস: Internet Archive — https://archive.org/details/ljs295