Columbia subject headings:
Harvard subject headings:
Aristotle--Contributions in philosophy of nature.
Beuys, Joseph--Criticism and interpretation.
Botanical illustration--History.
Goethe, Johann Wolfgang von, 1749-1832--Contributions in philosophy of nature.
Klee, Paul, 1879-1940--Criticism and interpretation.
Plant morphology.
Plants in art.
Princeton subject headings:
Aristotle--Knowledge--Botany.
Beuys, Joseph--Themes, motives.
Goethe, Johann Wolfgang von, 1749-1832--Knowledge--Botany.
Klee, Paul, 1879-1940--Themes, motives.
Plant morphology.
Plants in art.