Columbia subject headings:
Harvard subject headings:
Yi, Kyu-bo, 1168-1241--Criticism and interpretation.
Yi, Kyu-bo, 1168-1241--Poetic works.
Princeton subject headings:
Yi, Kyu-bo, 1168-1241--Criticism and interpretation.
Yi, Kyu-bo, 1168-1241--Poetic works.