AL-Daffa, Ali A. Studies in the exact sciences in Medieval Islam/ by Ali A. Al-Daffa and John J. Stroyls. - Dhahran, Saudi Arabia: Chichester: New York: University of Petroleum and Minerals, Wiley, c1984. - x, 243 p.: ill.; 24 cm. Bibliography: p. 219-243. ISBN: 0471903205 : $48.00 (U.S.) LCCN: 83021847 //r963 Nat. Bib. No.: GB84-18851 Subjects--Topical Terms: Science---History.--Islamic EmpireMathematics---History.--Islamic EmpireScience, Medieval- Dewey Class. No.: 510.9 / A316s