Schimmel, Annemarie. Gabriel's wing : A study into the religious ideas of Sir Muhammad Iqbal : by Annemarie Schimmel - New Delhi : Himalaya Pub , 2003 - ix, 428 p. ill 25 cm. Include index. Subjects--Topical Terms: Iqbal, Mu İgbal Dewey Class. No.: 181.4 / COP 1990.