TY  - BOOK
AU  - Berov,Lyuben
AU  - Velichkov,Bogomil
TI  - Bulgaria's economic development through the ages
U1  - 338.94977 
PY  - 1980///
CY  - [Sofia]
PB  - Sofia Press
KW  - Bulgaria
KW  - Economic conditions
N1  - Translated from the manuscript
ER  -