Columbia subject headings:
Bécquer, Gustavo Adolfo, 1836-1870--Criticism and interpretation.
Cosmology in literature.
Hermetism in literature.
Harvard subject headings:
Bécquer, Gustavo Adolfo, 1836-1870--Philosophy.
Bécquer, Gustavo Adolfo, 1836-1870--Religion.
Princeton subject headings:
Bécquer, Gustavo Adolfo, 1836-1870--Philosophy.
Bécquer, Gustavo Adolfo, 1836-1870--Religion.