Columbia subject headings:
Literature and science--Rome--Congresses.
Lucretius Carus, Titus. De rerum natura--Congresses.
Nature in literature--Congresses.
Harvard subject headings:
Lucretius Carus, Titus--Philosophy--Congresses.
Lucretius Carus, Titus. De rerum natura--Congresses.
Philosophy, Ancient, in literature--Congresses.
Princeton subject headings:
Lucretius Carus, Titus--Philosophy--Congresses.
Lucretius Carus, Titus. De rerum natura--Congresses.
Philosophy, Ancient, in literature--Congresses.