Columbia subject headings:
Tripp, John, 1927-1986--Criticism and interpretation.
Wales--In literature.
Harvard subject headings:
Tripp, John, 1927---Criticism and interpretation.
Tripp, John, 1927-1986--Criticism and interpretation.
Tripp, John, 1927-1986.
Wales--In literature.
Princeton subject headings:
Tripp, John, 1927-1986--Criticism and interpretation.