Columbia subject headings:
Korea--History--Japanese Invasions, 1592-1598.
Yu, Sŏng-nyong, 1542-1607.
Yu, Sŏng-nyong, 1542-1607. Chingbirok.
Harvard subject headings:
Korea--History--Japanese Invasions, 1592-1598.
Statesmen--Korea--Biography.
Yu, Sŏng-nyong, 1542-1607
Yu, Sŏng-nyong, 1542-1607. Chingbirok.
Princeton subject headings: