The quatrains of ʻOmar-i Khayyām : Persian text taken from the two newly discovered oldest manuscripts with an English prose version / by Friedrich Rosen. Omar Khayyam. Rosen, Friedrich, 1856-1935, tr. Omar Khayyam. Rubāʻīyāt. PK6516 .R75 891.551 KHQ London : Lusac, Lusac, 1928. 1928. 1928 Text vi, 200, 17, 197 p. ; eng engper