Columbia subject headings:
Harvard subject headings:
Adrianople. Bulgarskata muzhka gimnaziia.
Beron, Petŭr
Berovich, Petr, 1799-1871.
Bulgarians--Turkey.
Bŭlgarska mŭzhka gimnazii͡a (Edirne, Turkey)
Princeton subject headings:
Beron, Petŭr.
Bulgarians--Turkey.
Bŭlgarska mŭzhka gimnazii︠a︡ (Edirne, Turkey)