Please note that your choice of borrowing branch library affects which collection points you will be offered when ordering or reserving items. It is also relevant for deciding the loan status of items ('for loan', 'for order', etc.)
Ladner, Gerhart B.: Die Papstbildnisse des Altertums und des Mittelalters / Gerhart B. Ladner. - Città del Vaticano [u.a.]: Pontificio Istituto di Archeologia Cristiana, 1941-1984 (Monumenti di antichità cristiana : Ser. II ; 4)