Columbia subject headings:
Harvard subject headings:
Anthropological linguistics--Bulgaria--Congresses.
Anthropological linguistics--Congresses
Bulgarian language--Etymology--Names--Congresses.
Kovachev, Nikolaĭ P.--Congresses.
Onomastics--Congresses
Princeton subject headings:
Anthropological linguistics--Bulgaria--Congresses.
Anthropological linguistics--Congresses.
Bulgarian language--Etymology--Names--Congresses.
Kovachev, Nikolaĭ P.--Congresses.
Onomastics--Congresses.