TY - BOOK AU - Nasr, Seyyed Hossein. TI - An introduction to Islamic cosmological doctrines: conceptions of nature and methods used for its study by the Ikhwān al-Ṣafāʼ, al-Bīrūnī, and Ibn Sīnā U1 - 297.242 23 PY - 1964/// CY - Cambridge PB - Belknap Press of Harvard University Press KW - Islamic cosmology. N1 - Includes index ER -