Columbia subject headings:
Harvard subject headings:
Korea--History--Japanese Invasions, 1592-1598--Naval operations.
Korea--History--Japanese Invasions, 1592-1598.
Ŭibyŏng--Korea--History--16th century.
Ŭibyŏng--Research--Korea (South)
Princeton subject headings:
Korea--History--Japanese Invasions, 1592-1598--Campaigns.
Ŭibyŏng.