Columbia subject headings:
Kozlovsʹkyĭ, Ivan Semenovych, 1900-1993.
Opera--Soviet Union.
Tenors (Singers)--Soviet Union.
Harvard subject headings:
Princeton subject headings:
Kozlovsʹkyĭ, Ivan Semenovych, 1900-1993.
Opera--Soviet Union.
Tenors (Singers)--Soviet Union.