TY - BOOK ID - BVMC:1054253 AU - Abū Maʻšar al-Balh̲ī, Ğaʻfar ibn Muḥammad ibn ʻUmar AU - Hermann de Carintia TI - Introductorium in astronomiam UR - https://www.cervantesvirtual.com/obra/introductorium-in-astronomiam-1054253 ER -