Sharḥ-i Zīj Gūrgānī. شرح زیج گورگانی

Kislak Center for Special Collections, Rare Books and Manuscripts, LJS 400. Iran?, 1494. Commentary on the Zīj Gūrgānī, also known as the Zīj-i jadīd-i Sulṭānī, which comprised tables of calendar calculations, trigonometry, planets, and stars compiled from observations made at the observatory in Samarqand, completed in 1447. The tables themselves are not included. Penn Libraries Catalog: go to Find