ISBN 0198747373 books & textbook
On 'Astronomia': An Arabic Critical Edition and English Translation of Epistle 3 (Epistles of the Brethren of Purity)
OUP in association with the Institute of Ismaili Studies /2015-12-29 Hardcover / 368 Pages
isbn-10: 0198747373 / isbn-13: 9780198747376
