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Nasir al-Din al-Tusi's Memoir on astronomy = al-tadhkira fî 'ilm al-haya / commentary by F.J. Ragep.

Naòsîr al-Dîn al-òTûsî's Memoir on astronomy = al-tadhkira fî °ilm al-hay®a / [commentary by] F.J. Ragep.

Tradition, transmission, transformation : proceedings of two conferences on pre-modern science held at the University of Oklahoma / edited by F. Jamil Ragep and Sally P. Ragep, with Steven Livesey.