20191202d2012 u||y0frey5050 ba - Notes bibliogr. - PD . = Paris LCCN: 978-2-84050-829-8 Subjects--Corporate Names: HISTOIREHISTOIRE MEDIEVALEISLAMCHRISTIANISMEELITEGUERRECROISADESCIENCESCULTURE ARABECOMMERCEORIENTOCCIDENTCIVILISATIONMOYEN AGEEMPIRE BYZANTIN