Columbia subject headings:
Balkan Peninsula--Languages.
Russian language--Gerund.
Harvard subject headings:
Balkan Peninsula--Languages--Gerund.
Balkan Peninsula--Languages--Translating.
Russian language--Gerund.
Russian language--Translating into Balkan languages.
Princeton subject headings:
Balkan Peninsula--Languages--Gerund.
Balkan Peninsula--Languages--Translating.
Russian language--Gerund.
Russian language--Translating into Balkan languages.