Columbia subject headings:
Druids and druidism--Spain.
Druids and druidism.
Valle-Inclán, Ramón del, 1866-1936--Criticism and interpretation.
Harvard subject headings:
Druids and druidism
Druids and druidism--Spain.
Valle-Inclán, Ramón del, 1866-1936--Criticism and interpretation.
Princeton subject headings:
Druids and druidism in literature.
Druids and druidism--Spain--History.
Valle-Inclán, Ramón del, 1866-1936--Criticism and interpretation.
Valle-Inclán, Ramón del, 1866-1936--Knowledge--Druidism.