Singh, Jogendra . The Persian Mystics: The Inovations of Sheikh Abdullah Ansari of Heart (1005- 1090) / Textual Documents Jogendra Singh. - 1st ed. / - London : John Murray , 1939. - 59p. : ill ; 18cm . Subjects--Index Terms: Persian Mystics Mystics-Persian G-Bengali Dewey Class. No.: 891.69 / Si 64 P