Title: Sanŏp illyŏk ŭi ŏpchongbyŏl, chikchongbyŏl sugŭp chŏnmang kwa hyanghu taechʻaek
First published: 1990
Subjects: Engineers, Supply and demand, Forecasting, Idustrial technicians, Skilled labor
LC classification: TA157 .P28 1990