TY  - BOOK
AU  - Ullmann,Walter
TI  - The origins of the great schism: a study in fourteenth-century ecclesiastical history 
AV  - BX1301.U42.O754 1972 
PY  - 1972///
CY  - Hamden, Connecticut
PB  - Archon Books
N1  - Reprint. Originally published: [London] : Burns, Oates, and Washbourne, 1938; 2; 2
ER  -