Columbia subject headings:
Lange, Antoni, 1861-1929--Aesthetics.
Lange, Antoni, 1861-1929--Philosophy.
Harvard subject headings:
Lange, Antoni, 1861-1929--Aesthetics.
Lange, Antoni, 1861-1929--Philosophy.
Philosophy, Polish--19th century.
Princeton subject headings:
Aesthetics, Modern.
Lange, Antoni, 1861-1929--Philosophy.