Title: Rasāʾil Ikhwān al-Ṣafāʾ wa-Khillān al-Wafāʾ
Subjects: Early works to 1800, Islam, Islamic Philosophy, Ismailites, Philosophy, Islamic, Science, Sufism
People: Khayr al-Dīn Ziriklī (1893-)
Time periods: Early works to 1800