Columbia subject headings:
Animals in literature--Congresses.
Plants in literature--Congresses.
Spanish literature--To 1500--Themes, motives--Congresses.
Harvard subject headings:
Animals in literature--Congresses.
Plants in literature--Congresses.
Spanish literature--To 1500--Themes, motives--Congresses.
Princeton subject headings:
Animals in literature--Congresses.
Latin literature, Medieval and modern--History and criticism--Congresses.
Nature in literature--Congresses.
Plants in literature--Congresses.
Spanish literature--To 1500--History and criticism--Congresses.