TY - BOOK AU - Reynold A. Nicholson TI - Studies in Islamic mysticism SN - 0521295467 PY - 1921/// CY - Cambridge PB - Cambridge University Press KW - Sufism KW - Abu sa'Id bn Abi 'l-Khair (Fazl Ullah) KW - 'Abd al-Karlm ibn Ibrahim al-Jill KW - 'Umar ibn Ati, called Ibn al-Farid ER -