*Short history of Bulgaria / D. Kossev, H. Hristov [and D. Angelov ; by Marguerite Alexieva and Nicolai Koledarov ; illustrated by Ivan Bogdanov [and Vladislav Paskalev].
*Short history of Bulgaria / D. Kossev, H. Hristov [and D. Angelov ; by Marguerite Alexieva and Nicolai Koledarov ; illustrated by Ivan Bogdanov [and Vladislav Paskalev].