Columbia subject headings:
Proto-Indo-European language--Etymology.
Proto-Slavic language--Etymology.
Proto-Slavic language--Foreign words and phrases.
Harvard subject headings:
Baltic languages--Etymology.
Baltic languages--Foreign words and phrases
Proto-Indo-European language--Etymology.
Proto-Slavic language--Etymology.
Proto-Slavic language--Foreign words and phrases
Princeton subject headings:
Baltic languages--Etymology.
Slavic languages--Etymology.