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1Published 1997Subjects: “...Constitutional history United States Sources....”
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2Published 1978Subjects: “...World War, 1939-1945 Jews Bulgaria Sources....”
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3Published 1994Subjects: “...Bulgaria Politics and government 1878-1944 Sources....”
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4Published 1978Subjects: “...World War, 1939-1945 Bulgaria Sources....”
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5Published 2000Subjects: “...Bulgarians Foreign countries Politics and government Sources....”
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6Pismata na Teofilakta Okhridski, arkhiepiskop bŭlgarski : s priturka na negovoto mu̐̐chenichestvo... /Писмата на Теофилакта Охридски, архиепископ български : с притурка на неговото мѫченичество... /by Theophylactus, of Ochrida, Archbishop of Ochrida, approximately 1050-approximately 1108Subjects: “...Orthodox Eastern Church Balkan Peninsula History Sources....”
Published 1931
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7
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8Published 1969“...Bulgaria History Sources....”
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9Published 1977“...Bulgaria Relations Soviet Union Sources....”
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10Published 1957“...Bulgaria History Sources Periodicals....”
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11Published 1905“...Bulgaria History Sources....”
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12Avstriĭski dokumenti po Nishkoto bŭlgarsko vŭzstanie ot 1841 g. /Австрийски документи по Нишкото българско възстание от 1841 г. /by Romanski, St. (Stoi︠a︡n), 1882-1959“...Bulgaria History 1762-1878 Sources....”
Published 1912
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13Published 1970“...Bulgaria Foreign relations 1944-1990 Sources....”
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