Columbia subject headings:
Hasdeu, B. P. (Bogdan Petriceicu), 1838-1907.
Historians--Romania.
Romania--Historiography.
Harvard subject headings:
Hasdeu, B. P. (Bogdan Petriceicu), 1838-1907--Criticism and interpretation.
Hasdeu, B. P. (Bogdan Petriceicu), 1838-1907--Knowledge--History.
Princeton subject headings: