Columbia subject headings:
Harvard subject headings:
Books and reading--Wales--History.
Books--Wales--History.
English literature--Welsh authors--History and criticism
Publishers and publishing--Wales--History.
Welsh literature--History and criticism.
Princeton subject headings:
Books and reading--Wales--History.
Books--Wales--History.
English literature--Welsh authors--History and criticism.
Publishers and publishing--Wales--History.
Welsh literature--History and criticism.