TY  - BOOK
AU  - Knowles, David
AU  - Obolensky, Dimitri
TI  - The Christian Centuries, Volume 2: The Middle Ages
U1  - 270.3 
PY  - 1969///
CY  - London
PB  - Darton, Longman & Todd
KW  - Church history -- Middle ages
ER  -