TY  - BOOK
AU  - Browning,Robert
TI  - Byzantium and Bulgaria: a comparative study across the early medieval frontier
SN  - 0-520-02670-5
PY  - 1975///
CY  - Berkeley, Los Angeles
PB  - University of California Press
N1  - Бібліогр. : c. 207-210
ER  -