Title: Hyŏndae Hanʾguk sahoe sŏngkyŏk nonjaeng
Subjects: Congresses, Middle class, Social conditions, Labor movement, Working class, Social change, Social classes, Industries, History, Social aspects
Places: Korea (South), Korea
People: Hagen Koo (1941-), Gi-Wook Shin, Yunshik Chang
Time periods: 20th century