Title: Yu Sŏng-nyong in'ga Chŏng Ch'ŏl in'ga
Subjects: Politics and government
Places: Korea
People: Yŏ-rip Chŏng (1544-1589), Sŏng-nyong Yu (1542-1607), Ch'ŏl Chŏng (1536-1593)
Time periods: 16th century