Columbia subject headings:
Blake, William, 1757-1827. Songs of innocence and of experience.
Harvard subject headings:
Blake, William, 1757-1827. Songs of innocence and of experience. Songs of experience
Blake, William, 1757-1827. Songs of innocence and of experience. Songs of innocence
Princeton subject headings:
Blake, William, 1757-1827. Songs of innocence and of experience.