Columbia subject headings:
Bulgarian literature--20th century.
Lenin, Vladimir Ilʹich, 1870-1924--Fiction.
Lenin, Vladimir Ilʹich, 1870-1924--Poetry.
Harvard subject headings:
Lenin, Vladimir Ilʹich, 1870-1924--Fiction.
Lenin, Vladimir Ilʹich, 1870-1924--Poetry.
Princeton subject headings: