شرح زيج گورگانى.

Commentary on the Zīj Gūrgānī, also known as the Zīj-i jadīd-i Sultānī, 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. 1 online resource (409 leaves) : paper, illustrations