Title: Yŏmsaek yŏn'guga Yi Pyŏng-ch'an ŭi yŏmsaek insaeng 30-yŏn
Subjects: Dyes and dyeing, Textile fibers, Domestic Dyes and dyeing, Dye plants
Places: Korea (South)
People: Pyŏng-ch'an Yi (1932-)