BIBLIOGRAPHY REFERENCE: BOOK The Nectar of Grace: ʿOmar Khayyām's Life and Works Author Tirtha Govinda (Author) Year of Publication 1941 City Allahabad Other Numbers 11505 See reference for OpenMind ISMI items with this reference Person: Ġiyāṯ al-Dīn Abū al-Fatḥ ʿUmar ibn Ibrāhīm al-Ḫayyāmī al-Nīšāpūrī Witness: Tatimmaẗ Ṣiwān al-ḥikmaẗ_Berlin_Staatsbibliothek (Berlin)_Petermann II_737
