TY  - BOOK
AU  - LYON, Bryce
TI  - The origins of the Middle Ages: Pirenne's challenge to GibbonBryce Lyon
PY  - 1972///
CY  - New York
PB  - Norton
KW  - Middle Ages
KW  - Historiography
KW  - Gibbon, Edward
KW  - The History of the decline and fall of the Roman Empire
KW  - Pirenne, Henri
ER  -